In St. Clair there are 2 residential Fiber providers covering 30.51% of the city. The average home can get speeds up to 1,015 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.
This page contains all Fiber internet providers in St. Clair, MI.
To see availability maps for all providers including fiber, cable, DSL, and more in St. Clair, MI please click below.
St. Clair, MI Availability Maps
Fiber Internet Service Providers in St. Clair
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 are not shown.
St. Clair 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
Where in St. Clair is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 30.51% of St. Clair. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Duke Broadband. Call one of the companies with service in St. Clair above to see who has service at your home.
How fast is fiber internet in St. Clair?
The map below shows maximum fiber internet speeds by area in St. Clair.
Fiber Internet Speed Key
The average St. Clair home can get up to 1,015 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 1,200 Mbps, which 2.27% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 28.24% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in St. Clair.
Fiber internet speeds tend to be faster in the northwest parts of St. Clair, and slower in the southeast areas of the city.
Is fiber the fastest internet I can get in St. Clair?
The fastest internet for you may vary based on where in St. Clair you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 11.44% of St. Clair homes.
- Cable is fastest for 88.29% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of St. Clair homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in St. Clair, along with details on where in St. Clair and at what speeds.
Duke Broadband Fiber in St. Clair, MI
Duke Broadband fiber coverage
About 27.65%, or 3,148 people, have Duke Broadband fiber internet available to them in the city. The company covers the entire St. Clair area. Duke Broadband is a small internet service provider internet service providers in the US, with internet service available in a small portion of St. Clair.
Duke Broadband fiber download speeds
Duke Broadband is above average when comparing download speeds to all other internet providers in St. Clair. Versus other fiber providers in the area, Duke Broadband fiber is the slowest. There are no different maximum speeds throughout St. Clair. The fastest plan anyone in St. Clair can order from Duke Broadband goes up to 1,000 Mbps, and all St. Clair 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 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 fiber providers. Duke Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in St. Clair is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
XFINITY from Comcast Fiber in St. Clair, MI
XFINITY fiber coverage
About 14.48%, or 1,648 people, have XFINITY fiber internet available to them in the city. The company covers the northwest, north, central, and west St. Clair 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.
XFINITY from Comcast fiber download speeds
XFINITY is above average when comparing download speeds to all other internet providers in St. Clair. Versus other fiber providers in the area, XFINITY fiber is the fastest. There are 2 different maximum speeds throughout St. Clair. The fastest plan anyone in St. Clair can order from XFINITY goes up to 1,200 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for St. Clair customers is up to 1,031 Mbps.
Show all download speeds
- 15.7% up to 1,200.0 Mbps
- 84.3% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In St. Clair download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is the fastest where upload speeds are concerned, and the fastest compared to other St. Clair fiber providers. XFINITY offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Clair 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 994 Mbps.
Show all upload speeds
- 99.3% up to 1,000.0 Mbps
- 0.7% up to 35.0 Mbps
St. Clair Fiber by Area
This information is most helpful to those looking for homes or considering moving to St. Clair or any of the areas nearby.
How does fiber internet in St. Clair compare to the rest of Michigan?
Fiber internet speeds in St. Clair are much faster versus the average speeds in Michigan: 0.00 Mbps in Michigan versus 1,015 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Michigan is 0.00% versus 30.51% in St. Clair.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around St. Clair are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber internet look like in other cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- East China, MI: less fiber coverage, slower speeds
- Marysville, MI: less fiber coverage, slower speeds
- Rattle Run, MI: more fiber coverage, slower speeds
- Four Towns, MI: less fiber coverage, slower speeds
- Anchorville, MI: more fiber coverage, slower speeds
- Smiths Creek, MI: less fiber coverage, faster speeds
- Columbus, MI: less fiber coverage, faster speeds
- Mount Vernon, MI: less fiber coverage, slower speeds
- Marine City, MI: less fiber coverage, slower speeds
- Peters, MI: less fiber coverage, faster speeds
Cities with Similar Populations
- Bridge City, TX: less fiber coverage, faster speeds
- Commerce, CA: more fiber coverage, faster speeds
- Chipley, FL: less fiber coverage, faster speeds
- Cheraw, SC: more fiber coverage, faster speeds
- Cascades, VA: more fiber coverage, faster speeds
- Burr Ridge, IL: less fiber coverage, faster speeds
- Burkburnett, TX: more fiber coverage, faster speeds
- Brownsville, TN: more fiber coverage, slower speeds
- Brooklyn, OH: more fiber coverage, faster speeds
- Brookhaven, PA: more fiber coverage, slower speeds