In St. Clair County there are 10 residential internet providers covering 100.00% of the county. The average home can get speeds up to 892 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.
10 Internet Service Providers in St. Clair County
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.
HughesNet Satellite Internet
Where in St. Clair County is internet available?
Internet Availability Key
Internet service is available in 100.00% of St. Clair County. Areas in green are more likely to have fiber, cable, DSL, or fixed wireless internet service. Areas in red may be more reliant on satellite service. The most widely available provider is Wisper Internet. Call one of the companies with service in St. Clair County above to see who has service at your home, or click the technology to see where it can be found in St. Clair County.
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 892 Mbps on their internet plan. For most people, the fastest download speed in the county is 1,000 Mbps, which 18.07% 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 9.0 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 central parts of St. Clair County, and slower in the southwest 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 14.93% of St. Clair County homes.
- Cable is fastest for 78.56% of the county.
- DSL is fastest for 1.78%.
- Fixed wireless is fastest for 4.72%.
- 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: 3.9 (healthy)
- Average types of service (fiber, cable, DSL, etc): 3.0 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 3.6 (very healthy)
Overall, competition is very healthy.
St. Clair County internet customers have the ability to buy internet service from 1 to 6 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 6 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 is doing quite well.
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.
Spectrum Cable in St. Clair County, IL
Spectrum cable coverage
About 89.40%, or 241,440 people, have Spectrum cable internet available to them in the county. The company covers the entire St. Clair County area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in most of St. Clair County.
Spectrum cable download speeds
Spectrum is above 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 940 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Spectrum cable upload speeds
In St. Clair County download speeds tend to be than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and one of 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
AT&T DSL in St. Clair County, IL
AT&T DSL coverage
About 79.83%, or 215,583 people, have AT&T DSL 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 much 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 below average. There are 14 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 0.77 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 60 Mbps.
Show all download speeds
- 42.1% up to 100.0 Mbps
- 9.1% up to 75.0 Mbps
- 12.1% up to 50.0 Mbps
- 0.0% up to 45.0 Mbps
- 6.6% up to 25.0 Mbps
- 0.4% up to 24.0 Mbps
- 10.8% up to 18.0 Mbps
- 3.6% up to 12.0 Mbps
- 1.8% up to 10.0 Mbps
- 5.5% up to 6.0 Mbps
- 0.9% up to 5.0 Mbps
- 4.1% up to 3.0 Mbps
- 2.0% up to 1.5 Mbps
- 1.2% up to 0.8 Mbps
AT&T DSL upload speeds
In St. Clair County download speeds tend to be than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and above average compared to other St. Clair County DSL providers. AT&T offers 11 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 0.26 Mbps. On average, AT&T customers can get speeds up to 12 Mbps.
Show all upload speeds
- 51.2% up to 20.0 Mbps
- 12.1% up to 10.0 Mbps
- 0.0% up to 6.0 Mbps
- 4.5% up to 5.0 Mbps
- 0.4% up to 3.0 Mbps
- 2.1% up to 2.0 Mbps
- 14.4% up to 1.5 Mbps
- 13.5% up to 1.0 Mbps
- 0.5% up to 0.5 Mbps
- 1.3% up to 0.4 Mbps
- 0.2% up to 0.3 Mbps
AT&T Fiber in St. Clair County, IL
AT&T fiber coverage
About 13.10%, or 35,380 people, have AT&T fiber internet available to them in the county. The company covers the central, north, south, east, west, northwest, northeast, and southeast 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 one of the fastest when comparing download speeds to all other internet providers in St. Clair County. Versus other fiber providers in the area, AT&T 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 AT&T 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
AT&T fiber upload speeds
In St. Clair County download speeds tend to be than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is one of the fastest where upload speeds are concerned, and one of the fastest compared to other St. Clair County fiber providers. AT&T 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
Earthlink DSL in St. Clair County, IL
Earthlink DSL coverage
About 9.79%, or 26,448 people, have Earthlink DSL internet available to them in the county. The company covers the southeast, southwest, west, south, northeast, and east 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 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 the slowest. There are 10 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Earthlink goes up to 115 Mbps, the slowest package only goes up to 1.0 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 41 Mbps.
Show all download speeds
- 12.3% up to 115.0 Mbps
- 11.2% up to 90.0 Mbps
- 3.7% up to 70.0 Mbps
- 4.7% up to 45.0 Mbps
- 23.9% up to 25.0 Mbps
- 16.2% up to 18.0 Mbps
- 24.2% up to 12.0 Mbps
- 0.7% up to 9.0 Mbps
- 1.6% up to 3.0 Mbps
- 1.5% up to 1.0 Mbps
Earthlink DSL upload speeds
In St. Clair County download speeds tend to be than upload speeds for Earthlink DSL. Compared to other ISPs, Earthlink is below average where upload speeds are concerned, and the slowest compared to other St. Clair County DSL providers. Earthlink offers 7 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 0.13 Mbps. On average, Earthlink customers can get speeds up to 2.6 Mbps.
Show all upload speeds
- 12.3% up to 7.0 Mbps
- 11.2% up to 5.0 Mbps
- 8.4% up to 3.0 Mbps
- 23.9% up to 2.0 Mbps
- 41.0% up to 1.0 Mbps
- 1.6% up to 0.4 Mbps
- 1.5% up to 0.1 Mbps
Sparklight Cable in St. Clair County, IL
Sparklight cable coverage
About 2.14%, or 5,773 people, have Sparklight cable internet available to them in the county. The company covers the southeast, northeast, and southwest St. Clair County area. Sparklight 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.
Sparklight cable download speeds
Sparklight is one of the fastest when comparing download speeds to all other internet providers in St. Clair County. Versus other cable providers in the area, Sparklight cable 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 Sparklight 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
Sparklight cable upload speeds
In St. Clair County download speeds tend to be than upload speeds for Sparklight cable. Compared to other ISPs, Sparklight is below average where upload speeds are concerned, and one of the fastest compared to other St. Clair County cable providers. Sparklight 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
Harrisonville Telephone Company DSL in St. Clair County, IL
Harrisonville Telephone Company DSL coverage
About 1.83%, or 4,948 people, have Harrisonville Telephone Company DSL internet available to them in the county. The company covers the west and southwest St. Clair County area. Harrisonville Telephone Company 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.
Harrisonville Telephone Company DSL download speeds
Harrisonville Telephone Company is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other DSL providers in the area, Harrisonville Telephone Company DSL is the fastest. There are 5 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Harrisonville Telephone Company goes up to 100 Mbps, the slowest package only goes up to 15 Mbps, and the county-wide average maximum speed for St. Clair County customers is up to 83 Mbps.
Show all download speeds
- 66.4% up to 100.0 Mbps
- 2.1% up to 80.0 Mbps
- 28.3% up to 50.0 Mbps
- 0.5% up to 30.0 Mbps
- 2.7% up to 15.0 Mbps
Harrisonville Telephone Company DSL upload speeds
In St. Clair County download speeds tend to be than upload speeds for Harrisonville Telephone Company DSL. Compared to other ISPs, Harrisonville Telephone Company is below average where upload speeds are concerned, and the fastest compared to other St. Clair County DSL providers. Harrisonville Telephone Company 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, Harrisonville Telephone Company customers can get speeds up to 16 Mbps.
Show all upload speeds
- 66.4% up to 20.0 Mbps
- 30.4% up to 10.0 Mbps
- 0.5% up to 3.0 Mbps
- 2.7% up to 1.0 Mbps
Mediacom Cable in St. Clair County, IL
Mediacom cable coverage
About 1.63%, or 4,406 people, have Mediacom cable internet available to them in the county. The company covers the south and northwest St. Clair County area. Mediacom 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.
Mediacom cable download speeds
Mediacom is one of the fastest when comparing download speeds to all other internet providers in St. Clair County. Versus other cable providers in the area, Mediacom cable 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 Mediacom 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
Mediacom cable upload speeds
In St. Clair County download speeds tend to be than upload speeds for Mediacom cable. Compared to other ISPs, Mediacom is below average where upload speeds are concerned, and one of the fastest compared to other St. Clair County cable providers. Mediacom 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
Wisper Internet Fixed Wireless in St. Clair County, IL
Wisper Internet fixed wireless coverage
About 100.00%, or 270,044 people, have Wisper Internet fixed wireless internet available to them in the county. The company covers the entire St. Clair County area. Wisper 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.
Wisper Internet fixed wireless download speeds
Wisper 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, Wisper Internet fixed wireless is below average. There are 4 different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from Wisper Internet 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 46 Mbps.
Show all download speeds
- 28.1% up to 100.0 Mbps
- 0.7% up to 50.0 Mbps
- 70.8% up to 25.0 Mbps
- 0.4% up to 10.0 Mbps
Wisper Internet fixed wireless upload speeds
In St. Clair County download speeds tend to be than upload speeds for Wisper Internet fixed wireless. Compared to other ISPs, Wisper Internet is below average where upload speeds are concerned, and below average compared to other St. Clair County fixed wireless providers. Wisper Internet 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 2.0 Mbps. On average, Wisper Internet customers can get speeds up to 8.5 Mbps.
Show all upload speeds
- 28.1% up to 20.0 Mbps
- 0.7% up to 5.0 Mbps
- 70.8% up to 4.0 Mbps
- 0.4% up to 2.0 Mbps
Harrisonville Telephone Company (HTC) Fixed Wireless in St. Clair County, IL
HTC fixed wireless coverage
About 48.17%, or 130,083 people, have HTC fixed wireless internet available to them in the county. The company covers the entire St. Clair County area. HTC is a large internet service provider internet service providers in the US, with internet service available in some of St. Clair County.
Harrisonville Telephone Company (HTC) fixed wireless download speeds
HTC is below average when comparing download speeds to all other internet providers in St. Clair County. Versus other fixed wireless providers in the area, HTC fixed wireless is below average. There are no different maximum speeds throughout St. Clair County. The fastest plan anyone in St. Clair County can order from HTC goes up to 30 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 30.0 Mbps
Harrisonville Telephone Company (HTC) fixed wireless upload speeds
In St. Clair County download speeds tend to be than upload speeds for HTC fixed wireless. Compared to other ISPs, HTC is below average where upload speeds are concerned, and below average compared to other St. Clair County fixed wireless providers. HTC 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 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
T-Mobile Home Internet in St. Clair County, IL
T-Mobile Home Internet fixed wireless coverage
About 47.25%, or 127,607 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 some 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 no 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 25 Mbps, and all St. Clair County customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In St. Clair County download speeds tend to be 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 no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in St. Clair County is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 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 Illinois?
Internet speeds in St. Clair County are comparable versus the average speeds in Illinois: 933 Mbps in Illinois versus 892 Mbps in the county. The state has similar internet availability compared to the county. Average internet coverage in Illinois is 99.73% versus 100.00% 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
- St. Louis City, MO: equal internet coverage, faster speeds
- Monroe County, IL: equal internet coverage, slower speeds
- Madison County, IL: equal internet coverage, slower speeds
- St. Louis County, MO: equal internet coverage, faster speeds
- Clinton County, IL: equal internet coverage, slower speeds
- Jefferson County, MO: less internet coverage, slower speeds
- Randolph County, IL: less internet coverage, slower speeds
- Washington County, IL: less internet coverage, slower speeds
- Bond County, IL: equal internet coverage, slower speeds
- St. Charles County, MO: less internet coverage, faster speeds
Counties with Similar Populations
- Madison County, IL: equal internet coverage, slower speeds
- San Luis Obispo County, CA: less internet coverage, slower speeds
- Thurston County, WA: less internet coverage, faster speeds
- Webb County, TX: less internet coverage, faster speeds
- Cleveland County, OK: equal internet coverage, faster speeds
- New London County, CT: less internet coverage, faster speeds
- Santa Cruz County, CA: equal internet coverage, slower speeds
- Merced County, CA: equal internet coverage, slower speeds
- Dauphin County, PA: less internet coverage, faster speeds
- Ingham County, MI: less internet coverage, slower speeds