In St. Mary's County there are 8 residential internet providers covering 97.90% of the county. The average home can get speeds up to 1,310 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.
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8 Internet Service Providers in St. Mary's 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. Mary's County are not shown.
St. Mary's 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. Mary's 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 97.90% of St. Mary's 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 Atlantic Broadband. Now you can call companies in St. Mary's County with more confidence that they might be available.
How fast are internet speeds in St. Mary's County?
The map below shows maximum internet speeds by area in St. Mary's County.
Internet Speed Key
The average St. Mary's County home can get up to 1,310 Mbps on their internet plan. For most people, the fastest download speed in the county is 2,048 Mbps, which 15.94% 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 25 Mbps. See the internet provider details below for info about their speed and coverage in St. Mary's County.
Internet speeds tend to be faster in the southeast parts of St. Mary's County, and slower in the southwest areas of the county.
What type of internet should I choose in St. Mary's County?
The fastest internet for you may vary based on where in St. Mary's County you live. If speed is your main concern, fiber will be the fastest internet in the county.
- Fiber is the fastest internet type for 60.84% of St. Mary's County homes.
- Cable is fastest for 36.87% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 2.10% of St. Mary's County homes.
Internet Market Health in St. Mary's County
Internet Competition Key
The map shows how competitive the St. Mary's 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. Mary's County based on what connections the average home has availabile:
- Average number of internet service providers to a home: 4.6 (unhealthy)
- Average types of service (fiber, cable, DSL, etc): 2.6 (unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 4.6 (unhealthy)
Overall, competition is unhealthy.
St. Mary's County internet customers have the ability to buy internet service from 1 to 9 different providers, depending on where they live. For different types of service, St. Mary's County homes have between 1 and 3 options. The type(s) of service available are cable, fixed wireless, 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 similar. St. Mary's County internet customers who want faster speeds have between 1 and 9 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. Mary's County needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in St. Mary's County, along with details on where in St. Mary's County and at what speeds.
Atlantic Broadband Cable in St. Mary's County, MD
Atlantic Broadband cable coverage
About 94.15%, or 107,121 people, have Atlantic Broadband cable internet available to them in the county. The company covers the entire St. Mary's County area. Atlantic Broadband is a large internet service provider internet service providers in the US, with internet service available in most of St. Mary's County.
Atlantic Broadband cable download speeds
Atlantic Broadband is above average when comparing download speeds to all other internet providers in St. Mary's County. Versus other cable providers in the area, Atlantic Broadband cable is the slowest. There are no different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from Atlantic Broadband goes up to 1,000 Mbps, and all St. Mary's County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Atlantic Broadband cable upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for Atlantic Broadband cable. Compared to other ISPs, Atlantic Broadband is below average where upload speeds are concerned, and the slowest compared to other St. Mary's County cable providers. Atlantic Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Mary's County is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
XFINITY from Comcast Fiber in St. Mary's County, MD
XFINITY fiber coverage
About 52.88%, or 60,163 people, have XFINITY fiber internet available to them in the county. The company covers the entire St. Mary's County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of St. Mary's County.
XFINITY from Comcast fiber download speeds
XFINITY is above average when comparing download speeds to all other internet providers in St. Mary's County. Versus other fiber providers in the area, XFINITY fiber is below average. There are 3 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's 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. Mary's County customers is up to 1,144 Mbps.
Show all download speeds
- 12.3% up to 2,000.0 Mbps
- 10.4% up to 1,200.0 Mbps
- 77.3% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is above average where upload speeds are concerned, and below average compared to other St. Mary's 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. Mary's 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 948 Mbps.
Show all upload speeds
- 93.7% up to 1,000.0 Mbps
- 4.3% up to 250.0 Mbps
- 2.0% up to 35.0 Mbps
EarthLink Fiber in St. Mary's County, MD
EarthLink fiber coverage
About 18.78%, or 21,372 people, have EarthLink fiber internet available to them in the county. The company covers the southeast, east, central, and south St. Mary's County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of St. Mary's County.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in St. Mary's County. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 2 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from EarthLink goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 1,880 Mbps.
Show all download speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 940.0 Mbps
EarthLink fiber upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other St. Mary's 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. Mary's County is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 880 Mbps. On average, EarthLink customers can get speeds up to 1,871 Mbps.
Show all upload speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 880.0 Mbps
Verizon Fiber in St. Mary's County, MD
Verizon fiber coverage
About 18.78%, or 21,372 people, have Verizon fiber internet available to them in the county. The company covers the southeast, east, central, and south St. Mary's County area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of St. Mary's County.
Verizon fiber download speeds
Verizon is one of the fastest when comparing download speeds to all other internet providers in St. Mary's County. Versus other fiber providers in the area, Verizon fiber is one of the fastest. There are 2 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from Verizon goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 1,880 Mbps.
Show all download speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 940.0 Mbps
Verizon fiber upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is one of the fastest where upload speeds are concerned, and one of the fastest compared to other St. Mary's County fiber providers. Verizon 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. Mary's County is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 880 Mbps. On average, Verizon customers can get speeds up to 1,871 Mbps.
Show all upload speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 880.0 Mbps
XFINITY from Comcast Cable in St. Mary's County, MD
XFINITY cable coverage
About 11.00%, or 12,510 people, have XFINITY cable internet available to them in the county. The company covers the northwest, southeast, central, east, west, and north St. Mary's 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. Mary's County.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in St. Mary's County. Versus other cable providers in the area, XFINITY cable is the fastest. There are 3 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's 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. Mary's County customers is up to 1,780 Mbps.
Show all download speeds
- 76.7% up to 2,000.0 Mbps
- 7.0% up to 1,200.0 Mbps
- 16.4% up to 1,000.0 Mbps
XFINITY from Comcast cable upload speeds
In St. Mary's 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. Mary's 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. Mary's 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 200 Mbps.
Show all upload speeds
- 76.7% up to 250.0 Mbps
- 23.3% up to 35.0 Mbps
T-Mobile Home Internet Fixed Wireless in St. Mary's County, MD
T-Mobile Home Internet fixed wireless coverage
About 92.56%, or 105,308 people, have T-Mobile Home Internet fixed wireless internet available to them in the county. The company covers the entire St. Mary's 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. Mary's 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. Mary's 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. Mary's County. The fastest plan anyone in St. Mary's 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. Mary's County customers is up to 72 Mbps.
Show all download speeds
- 62.9% up to 100.0 Mbps
- 37.1% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In St. Mary's 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 average compared to other St. Mary's 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. Mary's 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 14 Mbps.
Show all upload speeds
- 62.9% up to 20.0 Mbps
- 37.1% up to 3.0 Mbps
EarthLink Fixed Wireless in St. Mary's County, MD
EarthLink fixed wireless coverage
About 61.54%, or 70,020 people, have EarthLink fixed wireless internet available to them in the county. The company covers the entire St. Mary's 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. Mary's County.
EarthLink fixed wireless download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in St. Mary's County. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 52 Mbps.
Show all download speeds
- 36.0% up to 100.0 Mbps
- 64.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other St. Mary's County fixed wireless 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. Mary's County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 9.1 Mbps.
Show all upload speeds
- 36.0% up to 20.0 Mbps
- 64.0% up to 3.0 Mbps
AT&T Fixed Wireless in St. Mary's County, MD
AT&T fixed wireless coverage
About 61.54%, or 70,020 people, have AT&T fixed wireless internet available to them in the county. The company covers the entire St. Mary's 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. Mary's County.
AT&T fixed wireless download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in St. Mary's County. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 52 Mbps.
Show all download speeds
- 36.0% up to 100.0 Mbps
- 64.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other St. Mary's County fixed wireless 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. Mary's County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 9.1 Mbps.
Show all upload speeds
- 36.0% up to 20.0 Mbps
- 64.0% up to 3.0 Mbps
Verizon Fixed Wireless in St. Mary's County, MD
Verizon fixed wireless coverage
About 42.71%, or 48,596 people, have Verizon fixed wireless internet available to them in the county. The company covers the southeast, central, east, north, south, northwest, west, and northeast St. Mary's 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. Mary's County.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in St. Mary's County. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from Verizon goes up to 300 Mbps, and all St. Mary's County customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In St. Mary's 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 the fastest compared to other St. Mary's 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. Mary's County is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
St. Mary's County Internet by Area
This information is most helpful to those looking for homes or considering moving to St. Mary's County or any of the areas nearby.
How does internet in St. Mary's County compare to the rest of Maryland?
Internet speeds in St. Mary's County are slower versus the average speeds in Maryland: 2,041 Mbps in Maryland versus 1,310 Mbps in the county. The state has similar internet availability compared to the county. Average internet coverage in Maryland is 98.96% versus 97.90% in St. Mary's County.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around St. Mary's 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
- King George County, VA: less internet coverage, slower speeds
- Stafford County, VA: more internet coverage, faster speeds
- Fredericksburg City, VA: more internet coverage, faster speeds
- Wicomico County, MD: less internet coverage, faster speeds
- Spotsylvania County, VA: more internet coverage, faster speeds
- Worcester County, MD: more internet coverage, faster speeds
- Orange County, VA: more internet coverage, faster speeds
- Culpeper County, VA: more internet coverage, faster speeds
- Madison County, VA: more internet coverage, slower speeds
- Greene County, VA: more internet coverage, faster speeds
Counties with Similar Populations
- Berkeley County, WV: more internet coverage, faster speeds
- Blair County, PA: more internet coverage, faster speeds
- Comanche County, OK: less internet coverage, faster speeds
- Carroll County, GA: more internet coverage, faster speeds
- Rockwall County, TX: more internet coverage, faster speeds
- Sheboygan County, WI: more internet coverage, faster speeds
- Potter County, TX: more internet coverage, faster speeds
- Oswego County, NY: more internet coverage, slower speeds
- Ontario County, NY: more internet coverage, faster speeds
- Newton County, GA: more internet coverage, faster speeds