In Clinton County there are 4 residential Fiber providers covering 99.44% of the county. The average home can get speeds up to 7,000 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 Clinton County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Clinton County, IL please click below.
Clinton County, IL Availability Maps
Fiber Internet Service Providers in Clinton 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 Clinton County are not shown.
Clinton 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
Where in Clinton County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 99.44% of Clinton County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Cable One. Call one of the companies with service in Clinton County above to see who has service at your home.
How fast is fiber internet in Clinton County?
The map below shows maximum fiber internet speeds by area in Clinton County.
Fiber Internet Speed Key
The average Clinton County home can get up to 7,000 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 7,000 Mbps, which 99.44% of residents can get.
Is fiber the fastest internet I can get in Clinton County?
The fastest internet for you may vary based on where in Clinton County you live. In general, fixed wireless competes most often with fiber in the county.
- Fiber is the fastest internet type for 99.44% of Clinton County homes.
- Cable is fastest for less than 1% 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 less than 1% of Clinton County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Clinton County, along with details on where in Clinton County and at what speeds.
Sparklight Fiber in Clinton County, IL
Sparklight fiber coverage
About 99.44%, or 36,691 people, have Sparklight fiber internet available to them in the county. The company covers the entire Clinton County area. Sparklight is one of the largest internet service providers internet service providers in the US, with internet service available in most of Clinton County.
Sparklight fiber download speeds
Sparklight is the fastest when comparing download speeds to all other internet providers in Clinton County. Versus other fiber providers in the area, Sparklight fiber is the fastest. There are no different maximum speeds throughout Clinton County. The fastest plan anyone in Clinton County can order from Sparklight goes up to 7,000 Mbps, and all Clinton County customers can get this speed.
Show all download speeds
- 100.0% up to 7,000.0 Mbps
Sparklight fiber upload speeds
In Clinton County download speeds tend to be equal to than upload speeds for Sparklight fiber. Compared to other ISPs, Sparklight is the fastest where upload speeds are concerned, and the fastest compared to other Clinton County fiber providers. Sparklight offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Clinton County is up to 7,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7,000.0 Mbps
Allpoint Networx Fiber in Clinton County, IL
Allpoint Networx fiber coverage
About 3.21%, or 1,186 people, have Allpoint Networx fiber internet available to them in the county. The company covers the northwest and north Clinton County area. Allpoint Networx is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Clinton County.
Allpoint Networx fiber download speeds
Allpoint Networx is above average when comparing download speeds to all other internet providers in Clinton County. Versus other fiber providers in the area, Allpoint Networx fiber is one of the slowest. There are no different maximum speeds throughout Clinton County. The fastest plan anyone in Clinton County can order from Allpoint Networx goes up to 1,000 Mbps, and all Clinton County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Allpoint Networx fiber upload speeds
In Clinton County download speeds tend to be equal to than upload speeds for Allpoint Networx fiber. Compared to other ISPs, Allpoint Networx is above average where upload speeds are concerned, and one of the slowest compared to other Clinton County fiber providers. Allpoint Networx offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Clinton 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 Fiber in Clinton County, IL
EarthLink fiber coverage
About 1.64%, or 605 people, have EarthLink fiber internet available to them in the county. The company covers the north Clinton 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 Clinton County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Clinton County. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are no different maximum speeds throughout Clinton County. The fastest plan anyone in Clinton County can order from EarthLink goes up to 1,000 Mbps, and all Clinton County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Clinton 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 one of the slowest compared to other Clinton County fiber providers. EarthLink offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Clinton 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
AT&T Fiber in Clinton County, IL
AT&T fiber coverage
About 1.64%, or 605 people, have AT&T fiber internet available to them in the county. The company covers the north Clinton 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 Clinton County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Clinton County. Versus other fiber providers in the area, AT&T fiber is one of the slowest. There are no different maximum speeds throughout Clinton County. The fastest plan anyone in Clinton County can order from AT&T goes up to 1,000 Mbps, and all Clinton County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Clinton 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 one of the slowest compared to other Clinton County fiber providers. AT&T offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Clinton 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
Clinton County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Clinton County or any of the areas nearby.
How does fiber internet in Clinton County compare to the rest of Illinois?
Fiber internet speeds in Clinton County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 7,000 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Illinois is 0.00% versus 99.44% in Clinton County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Clinton County 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 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
- Marion County, IL: less fiber coverage, slower speeds
- St. Clair County, IL: less fiber coverage, slower speeds
- St. Louis City, MO: less fiber coverage, slower speeds
- St. Louis County, MO: less fiber coverage, slower speeds
- Wayne County, IL: less fiber coverage, slower speeds
- Edwards County, IL: less fiber coverage, slower speeds
- Franklin County, MO: less fiber coverage, slower speeds
- Wabash County, IL: less fiber coverage, slower speeds
- Gasconade County, MO: less fiber coverage, slower speeds
- Knox County, IN: less fiber coverage, slower speeds
Counties with Similar Populations
- Las Piedras Municipio, PR: less fiber coverage, slower speeds
- Montrose County, CO: less fiber coverage, slower speeds
- Monroe County, WI: less fiber coverage, slower speeds
- Monroe County, TN: less fiber coverage, slower speeds
- Macoupin County, IL: less fiber coverage, slower speeds
- Macon County, NC: less fiber coverage, slower speeds
- Lyon County, KS: less fiber coverage, slower speeds
- Louisa County, VA: less fiber coverage, slower speeds
- Logan County, OH: less fiber coverage, slower speeds
- Livingston County, IL: less fiber coverage, slower speeds