In St. Clair County there are 15 residential internet providers covering 99.86% of the county. The average home can get speeds up to 1,764 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
Jump to Availability Maps
15 Internet Service Providers in St. Clair County
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in St. Clair County are not shown.
St. Clair County Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Availability maps for all providers in St. Clair County
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 99.86% of St. Clair County. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is XFINITY. Now you can call companies in St. Clair County with more confidence that they might be available.
How fast are internet speeds in St. Clair County?
The map below shows maximum internet speeds by area in St. Clair County.

Internet Speed Key
The average St. Clair County home can get up to 1,764 Mbps on their internet plan. For most people, the fastest download speed in the county is 5,000 Mbps, which 13.72% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in St. Clair County.
Internet speeds tend to be faster in the east parts of St. Clair County, and slower in the west areas of the county.
What type of internet should I choose in St. Clair County?
The fastest internet for you may vary based on where in St. Clair County you live. If speed is your main concern, cable will be the fastest internet in the county.
- Fiber is the fastest internet type for 18.54% of St. Clair County homes.
- Cable is fastest for 72.28% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 8.22%.
- Satellite internet may be the only option for less than 1% of St. Clair County homes.
Internet Market Health in St. Clair County

Internet Competition Key
The map shows how competitive the St. Clair County internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in St. Clair County based on what connections the average home has availabile:
- Average number of internet service providers to a home: 5.3 (unhealthy)
- Average types of service (fiber, cable, DSL, etc): 2.9 (healthy)
- Average providers with broadband (25 Mbps+) speeds: 4.4 (unhealthy)
Overall, competition is unhealthy.
St. Clair County internet customers have the ability to buy internet service from 1 to 13 different providers, depending on where they live. For different types of service, St. Clair County homes have between 1 and 4 options. The type(s) of service available are fixed wireless, cable, dsl, and fiber, though these may vary depending on the region within the county.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. St. Clair County internet customers who want faster speeds have between 0 and 11 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, St. Clair County needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in St. Clair County, along with details on where in St. Clair County and at what speeds.
XFINITY from Comcast Cable in St. Clair County, MI

XFINITY cable coverage
About 83.73%, or 134,283 people, have XFINITY cable internet available to them in the county. The company covers the entire St. Clair County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in much of St. Clair County.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in St. Clair County. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 1,399 Mbps.
Show all download speeds
- 24.9% up to 2,000.0 Mbps
- 75.1% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the fastest compared to other St. Clair County cable providers. XFINITY offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 250 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 88 Mbps.
Show all upload speeds
- 24.9% up to 250.0 Mbps
- 75.1% up to 35.0 Mbps
AT&T DSL in St. Clair County, MI

AT&T DSL coverage
About 60.30%, or 96,705 people, have AT&T DSL internet available to them in the county. The company covers the east, south, northeast, north, southeast, central, and southwest St. Clair County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of St. Clair County.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 5 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 40 Mbps.
Show all download speeds
- 21.1% up to 100.0 Mbps
- 5.7% up to 75.0 Mbps
- 15.3% up to 50.0 Mbps
- 9.6% up to 25.0 Mbps
- 48.3% up to 10.0 Mbps
AT&T DSL upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the fastest compared to other St. Clair County DSL providers. AT&T offers 4 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 7.8 Mbps.
Show all upload speeds
- 26.8% up to 20.0 Mbps
- 15.3% up to 10.0 Mbps
- 9.6% up to 5.0 Mbps
- 48.3% up to 1.0 Mbps
EarthLink DSL in St. Clair County, MI

EarthLink DSL coverage
About 60.30%, or 96,705 people, have EarthLink DSL internet available to them in the county. The company covers the east, south, northeast, north, southeast, central, and southwest St. Clair County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of St. Clair County.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 5 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 40 Mbps.
Show all download speeds
- 21.1% up to 100.0 Mbps
- 5.7% up to 75.0 Mbps
- 15.3% up to 50.0 Mbps
- 9.6% up to 25.0 Mbps
- 48.3% up to 10.0 Mbps
EarthLink DSL upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the fastest compared to other St. Clair County DSL providers. EarthLink offers 4 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 7.8 Mbps.
Show all upload speeds
- 26.8% up to 20.0 Mbps
- 15.3% up to 10.0 Mbps
- 9.6% up to 5.0 Mbps
- 48.3% up to 1.0 Mbps
Frontier Communications DSL in St. Clair County, MI

Frontier DSL coverage
About 23.17%, or 37,161 people, have Frontier DSL internet available to them in the county. The company covers the northwest, west, north, southwest, central, south, and northeast St. Clair County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of St. Clair County.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other DSL providers in the area, Frontier DSL is the slowest. There are 5 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Frontier goes up to 115 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 40 Mbps.
Show all download speeds
- 17.0% up to 115.0 Mbps
- 9.2% up to 90.0 Mbps
- 5.2% up to 70.0 Mbps
- 5.1% up to 45.0 Mbps
- 63.6% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is below average where upload speeds are concerned, and the slowest compared to other St. Clair County DSL providers. Frontier offers 4 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 7.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Frontier customers can get speeds up to 2.6 Mbps.
Show all upload speeds
- 17.0% up to 7.0 Mbps
- 9.2% up to 5.0 Mbps
- 10.2% up to 3.0 Mbps
- 63.6% up to 1.0 Mbps
EarthLink Fiber in St. Clair County, MI

EarthLink fiber coverage
About 9.14%, or 14,663 people, have EarthLink fiber internet available to them in the county. The company covers the east, northeast, north, central, and southwest St. Clair County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of St. Clair County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, EarthLink fiber is above average. There are 2 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 4,972 Mbps.
Show all download speeds
- 99.3% up to 5,000.0 Mbps
- 0.7% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In St. Clair County download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and above average compared to other St. Clair County fiber providers. EarthLink offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, EarthLink customers can get speeds up to 4,972 Mbps.
Show all upload speeds
- 99.3% up to 5,000.0 Mbps
- 0.7% up to 1,000.0 Mbps
AT&T Fiber in St. Clair County, MI

AT&T fiber coverage
About 9.14%, or 14,663 people, have AT&T fiber internet available to them in the county. The company covers the east, northeast, north, central, and southwest St. Clair County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of St. Clair County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, AT&T fiber is above average. There are 2 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 4,972 Mbps.
Show all download speeds
- 99.3% up to 5,000.0 Mbps
- 0.7% up to 1,000.0 Mbps
AT&T fiber upload speeds
In St. Clair County download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and above average compared to other St. Clair County fiber providers. AT&T offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, AT&T customers can get speeds up to 4,972 Mbps.
Show all upload speeds
- 99.3% up to 5,000.0 Mbps
- 0.7% up to 1,000.0 Mbps
XFINITY from Comcast Fiber in St. Clair County, MI

XFINITY fiber coverage
About 7.22%, or 11,583 people, have XFINITY fiber internet available to them in the county. The company covers the northwest, south, west, central, southwest, and north St. Clair County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of St. Clair County.
XFINITY from Comcast fiber download speeds
XFINITY is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, XFINITY fiber is below average. There are 3 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 1,037 Mbps.
Show all download speeds
- 0.4% up to 2,000.0 Mbps
- 16.4% up to 1,200.0 Mbps
- 83.2% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and below average compared to other St. Clair County fiber providers. XFINITY offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 887 Mbps.
Show all upload speeds
- 88.1% up to 1,000.0 Mbps
- 0.4% up to 250.0 Mbps
- 11.4% up to 35.0 Mbps
Duke Broadband Fiber in St. Clair County, MI

Duke Broadband fiber coverage
About 4.44%, or 7,126 people, have Duke Broadband fiber internet available to them in the county. The company covers the south, southeast, central, southwest, and east St. Clair County area. Duke Broadband is a small internet service provider internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Duke Broadband fiber download speeds
Duke Broadband is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, Duke Broadband fiber is one of the slowest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Duke Broadband goes up to 1,000 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Duke Broadband fiber upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Duke Broadband fiber. Compared to other ISPs, Duke Broadband is below average where upload speeds are concerned, and the slowest compared to other St. Clair County fiber providers. Duke Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
Mercury Broadband Fiber in St. Clair County, MI

Mercury Broadband fiber coverage
About 3.43%, or 5,502 people, have Mercury Broadband fiber internet available to them in the county. The company covers the northwest, north, and west St. Clair County area. Mercury Broadband is a large internet service provider internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Mercury Broadband fiber download speeds
Mercury Broadband is one of the fastest when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, Mercury Broadband fiber is one of the fastest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Mercury Broadband goes up to 5,000 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Mercury Broadband fiber upload speeds
In St. Clair County download speeds tend to be equal to than upload speeds for Mercury Broadband fiber. Compared to other ISPs, Mercury Broadband is one of the fastest where upload speeds are concerned, and one of the fastest compared to other St. Clair County fiber providers. Mercury Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Highline Fiber in St. Clair County, MI

Highline fiber coverage
About 1.69%, or 2,713 people, have Highline fiber internet available to them in the county. The company covers the northwest and north St. Clair County area. Highline is a large internet service provider internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Highline fiber download speeds
Highline is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, Highline fiber is one of the slowest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Highline goes up to 1,000 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Highline fiber upload speeds
In St. Clair County download speeds tend to be equal to than upload speeds for Highline fiber. Compared to other ISPs, Highline is below average where upload speeds are concerned, and below average compared to other St. Clair County fiber providers. Highline offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Frontier Communications Fiber in St. Clair County, MI

Frontier fiber coverage
About 1.21%, or 1,942 people, have Frontier fiber internet available to them in the county. The company covers the northwest St. Clair County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Frontier Communications fiber download speeds
Frontier is one of the fastest when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, Frontier fiber is one of the fastest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Frontier goes up to 5,000 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Frontier Communications fiber upload speeds
In St. Clair County download speeds tend to be equal to than upload speeds for Frontier fiber. Compared to other ISPs, Frontier is one of the fastest where upload speeds are concerned, and one of the fastest compared to other St. Clair County fiber providers. Frontier offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Spectrum Cable in St. Clair County, MI

Spectrum cable coverage
About 1.10%, or 1,767 people, have Spectrum cable internet available to them in the county. The company covers the west St. Clair County area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Spectrum cable download speeds
Spectrum is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other cable providers in the area, Spectrum cable is the slowest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Spectrum goes up to 1,000 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the slowest compared to other St. Clair County cable providers. Spectrum offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
T-Mobile Home Internet Fixed Wireless in St. Clair County, MI

T-Mobile Home Internet fixed wireless coverage
About 94.58%, or 151,685 people, have T-Mobile Home Internet fixed wireless internet available to them in the county. The company covers the entire St. Clair County area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in most of St. Clair County.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 66 Mbps.
Show all download speeds
- 54.1% up to 100.0 Mbps
- 45.9% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and below average compared to other St. Clair County fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 12 Mbps.
Show all upload speeds
- 54.1% up to 20.0 Mbps
- 45.9% up to 3.0 Mbps
Verizon Fixed Wireless in St. Clair County, MI

Verizon fixed wireless coverage
About 41.01%, or 65,781 people, have Verizon fixed wireless internet available to them in the county. The company covers the entire St. Clair County area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in some of St. Clair County.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Verizon goes up to 300 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and above average compared to other St. Clair County fixed wireless providers. Verizon offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink Fixed Wireless in St. Clair County, MI

EarthLink fixed wireless coverage
About 40.52%, or 64,991 people, have EarthLink fixed wireless internet available to them in the county. The company covers the entire St. Clair County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of St. Clair County.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are 3 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 39 Mbps.
Show all download speeds
- 18.6% up to 100.0 Mbps
- 81.0% up to 25.0 Mbps
- 0.4% up to 10.0 Mbps
EarthLink fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other St. Clair County fixed wireless providers. EarthLink offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 6.2 Mbps.
Show all upload speeds
- 18.6% up to 20.0 Mbps
- 81.0% up to 3.0 Mbps
- 0.4% up to 1.0 Mbps
AT&T Fixed Wireless in St. Clair County, MI

AT&T fixed wireless coverage
About 40.52%, or 64,991 people, have AT&T fixed wireless internet available to them in the county. The company covers the entire St. Clair County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of St. Clair County.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are 3 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 39 Mbps.
Show all download speeds
- 18.6% up to 100.0 Mbps
- 81.0% up to 25.0 Mbps
- 0.4% up to 10.0 Mbps
AT&T fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other St. Clair County fixed wireless providers. AT&T offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 6.2 Mbps.
Show all upload speeds
- 18.6% up to 20.0 Mbps
- 81.0% up to 3.0 Mbps
- 0.4% up to 1.0 Mbps
Mercury Broadband Fixed Wireless in St. Clair County, MI

Mercury Broadband fixed wireless coverage
About 20.53%, or 32,930 people, have Mercury Broadband fixed wireless internet available to them in the county. The company covers the north, northwest, northeast, west, central, and southwest St. Clair County area. Mercury Broadband is a large internet service provider internet service providers in the US, with internet service available in a small portion of St. Clair County.
Mercury Broadband fixed wireless download speeds
Mercury Broadband is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, Mercury Broadband fixed wireless is above average. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Mercury Broadband goes up to 150 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 150.0 Mbps
Mercury Broadband fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Mercury Broadband fixed wireless. Compared to other ISPs, Mercury Broadband is below average where upload speeds are concerned, and above average compared to other St. Clair County fixed wireless providers. Mercury Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Air Advantage Fixed Wireless in St. Clair County, MI

Air Advantage fixed wireless coverage
About 12.37%, or 19,833 people, have Air Advantage fixed wireless internet available to them in the county. The company covers the northwest, west, north, southwest, and central St. Clair County area. Air Advantage is a large internet service provider internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Air Advantage fixed wireless download speeds
Air Advantage is the slowest when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, Air Advantage fixed wireless is the slowest. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Air Advantage goes up to 10 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Air Advantage fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Air Advantage fixed wireless. Compared to other ISPs, Air Advantage is the slowest where upload speeds are concerned, and the slowest compared to other St. Clair County fixed wireless providers. Air Advantage offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 1.0 Mbps, which is available to everyone covered.
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- 100.0% up to 1.0 Mbps
Agri-Valley Communications Fixed Wireless in St. Clair County, MI

Agri-Valley Communications fixed wireless coverage
About 7.06%, or 11,321 people, have Agri-Valley Communications fixed wireless internet available to them in the county. The company covers the northwest, north, and northeast St. Clair County area. Agri-Valley Communications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of St. Clair County.
Agri-Valley Communications fixed wireless download speeds
Agri-Valley Communications is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, Agri-Valley Communications fixed wireless is below average. There are 3 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Agri-Valley Communications goes up to 50 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 30 Mbps.
Show all download speeds
- 29.0% up to 50.0 Mbps
- 34.8% up to 35.0 Mbps
- 36.2% up to 10.0 Mbps
Agri-Valley Communications fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for Agri-Valley Communications fixed wireless. Compared to other ISPs, Agri-Valley Communications is below average where upload speeds are concerned, and below average compared to other St. Clair County fixed wireless providers. Agri-Valley Communications offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair County is up to 7.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Agri-Valley Communications customers can get speeds up to 4.1 Mbps.
Show all upload speeds
- 29.0% up to 7.0 Mbps
- 34.8% up to 5.0 Mbps
- 36.2% up to 1.0 Mbps
M3 Wireless Fixed Wireless in St. Clair County, MI

M3 Wireless fixed wireless coverage
About 6.22%, or 9,974 people, have M3 Wireless fixed wireless internet available to them in the county. The company covers the north, northeast, and northwest St. Clair County area. M3 Wireless is a large internet service provider internet service providers in the US, with internet service available in a very small piece of St. Clair County.
M3 Wireless fixed wireless download speeds
M3 Wireless is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, M3 Wireless fixed wireless is average. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from M3 Wireless goes up to 100 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 100.0 Mbps
M3 Wireless fixed wireless upload speeds
In St. Clair County download speeds tend to be faster than than upload speeds for M3 Wireless fixed wireless. Compared to other ISPs, M3 Wireless is below average where upload speeds are concerned, and the fastest compared to other St. Clair County fixed wireless providers. M3 Wireless offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
St. Clair County Internet by Area
This information is most helpful to those looking for homes or considering moving to St. Clair County or any of the areas nearby.
How does internet in St. Clair County compare to the rest of Michigan?
Internet speeds in St. Clair County are slower versus the average speeds in Michigan: 2,523 Mbps in Michigan versus 1,764 Mbps in the county. The state has similar internet availability compared to the county. Average internet coverage in Michigan is 98.94% versus 99.86% in St. Clair County.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around St. Clair County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service look like in other counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Lapeer County, MI: less internet coverage, slower speeds
- Genesee County, MI: less internet coverage, faster speeds
- Shiawassee County, MI: less internet coverage, faster speeds
- Clinton County, MI: less internet coverage, faster speeds
- Ionia County, MI: less internet coverage, slower speeds
- Kent County, MI: less internet coverage, faster speeds
- Ottawa County, MI: less internet coverage, faster speeds
- Erie County, NY: less internet coverage, faster speeds
- Genesee County, NY: less internet coverage, slower speeds
- Ontario County, NY: less internet coverage, faster speeds
Counties with Similar Populations
- Charles County, MD: less internet coverage, faster speeds
- Paulding County, GA: more internet coverage, faster speeds
- Davidson County, NC: less internet coverage, faster speeds
- Pueblo County, CO: less internet coverage, faster speeds
- Chittenden County, VT: less internet coverage, slower speeds
- Beaver County, PA: less internet coverage, faster speeds
- Merrimack County, NH: less internet coverage, faster speeds
- Mesa County, CO: less internet coverage, slower speeds
- Middlesex County, CT: less internet coverage, faster speeds
- Midland County, TX: less internet coverage, faster speeds


