In Clark County there are 2 residential DSL providers covering 77.81% of the county. The average home can get speeds up to 35 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 DSL internet providers in Clark County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Clark County, IL please click below.
Clark County, IL Availability Maps
DSL Internet Service Providers in Clark 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 Clark County are not shown.
Clark 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 Clark County is DSL internet available?
DSL Internet Availability Key
DSL is available in 77.81% of Clark County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Frontier. Call one of the companies with service in Clark County above to see who has service at your home.
How fast is DSL internet in Clark County?
The map below shows maximum DSL internet speeds by area in Clark County.
DSL Internet Speed Key
The average Clark County home can get up to 35 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 500 Mbps, which 1.15% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 55.76% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Clark County.
DSL internet speeds tend to be faster in the southeast parts of Clark County, and slower in the north areas of the county.
Is DSL the fastest internet I can get in Clark County?
The fastest internet for you may vary based on where in Clark County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 64.52% of Clark County homes.
- Cable is fastest for 3.92% of the county.
- DSL is fastest for 4.10%.
- Fixed wireless is fastest for 23.47%.
- Satellite internet may be the only option for 3.99% of Clark County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Clark County, along with details on where in Clark County and at what speeds.
Frontier Communications DSL in Clark County, IL
Frontier DSL coverage
About 63.68%, or 9,842 people, have Frontier DSL internet available to them in the county. The company covers the entire Clark County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Clark County.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in Clark County. Versus other DSL providers in the area, Frontier DSL is the slowest. There are 5 different maximum speeds throughout Clark County. The fastest plan anyone in Clark 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 Clark County customers is up to 32 Mbps.
Show all download speeds
- 9.3% up to 115.0 Mbps
- 5.1% up to 90.0 Mbps
- 7.8% up to 70.0 Mbps
- 8.9% up to 45.0 Mbps
- 68.9% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Clark County download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the slowest compared to other Clark 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 Clark 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 2.1 Mbps.
Show all upload speeds
- 9.3% up to 7.0 Mbps
- 5.1% up to 5.0 Mbps
- 16.7% up to 3.0 Mbps
- 68.9% up to 1.0 Mbps
Fidium Fiber DSL in Clark County, IL
Fidium DSL coverage
About 15.47%, or 2,391 people, have Fidium DSL internet available to them in the county. The company covers the central, west, south, southwest, north, southeast, and northwest Clark County area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Clark County.
Fidium Fiber DSL download speeds
Fidium is below average when comparing download speeds to all other internet providers in Clark County. Versus other DSL providers in the area, Fidium DSL is the fastest. There are 4 different maximum speeds throughout Clark County. The fastest plan anyone in Clark County can order from Fidium goes up to 500 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Clark County customers is up to 50 Mbps.
Show all download speeds
- 7.4% up to 500.0 Mbps
- 0.0% up to 150.0 Mbps
- 8.0% up to 50.0 Mbps
- 84.5% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Clark County download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is below average where upload speeds are concerned, and the fastest compared to other Clark County DSL providers. Fidium 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 Clark County is up to 75 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Fidium customers can get speeds up to 7.2 Mbps.
Show all upload speeds
- 7.4% up to 75.0 Mbps
- 0.0% up to 30.0 Mbps
- 8.0% up to 10.0 Mbps
- 84.5% up to 1.0 Mbps
Clark County DSL by Area
This information is most helpful to those looking for homes or considering moving to Clark County or any of the areas nearby.
How does DSL internet in Clark County compare to the rest of Illinois?
DSL internet speeds in Clark County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 35 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Illinois is 0.00% versus 77.81% in Clark County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Clark County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL 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
- Vigo County, IN: less DSL coverage, slower speeds
- Cumberland County, IL: less DSL coverage, faster speeds
- Coles County, IL: less DSL coverage, faster speeds
- Clay County, IN: less DSL coverage, faster speeds
- Owen County, IN: less DSL coverage, slower speeds
- Shelby County, IL: less DSL coverage, faster speeds
- Brown County, IN: less DSL coverage, slower speeds
- Bartholomew County, IN: less DSL coverage, faster speeds
- Decatur County, IN: less DSL coverage, slower speeds
- Greene County, IL: less DSL coverage, faster speeds
Counties with Similar Populations
- Mercer County, IL: less DSL coverage, slower speeds
- Martin County, IN: less DSL coverage, faster speeds
- Martin County, KY: less DSL coverage, slower speeds
- Martinsville City, VA: less DSL coverage, slower speeds
- Mason County, IL: less DSL coverage, faster speeds
- Massac County, IL: more DSL coverage, faster speeds
- Maunabo Municipio, PR: less DSL coverage, slower speeds
- McCormick County, SC: less DSL coverage, slower speeds
- McCulloch County, TX: less DSL coverage, slower speeds
- McDowell County, WV: less DSL coverage, faster speeds