In Sangamon County there are 3 residential DSL providers covering 72.50% of the county. The average home can get speeds up to 56 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 Sangamon County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Sangamon County, IL please click below.
Sangamon County, IL Availability Maps
DSL Internet Service Providers in Sangamon 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 Sangamon County are not shown.
Sangamon 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 Sangamon County is DSL internet available?
DSL Internet Availability Key
DSL is available in 72.50% of Sangamon County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Sangamon County above to see who has service at your home.
How fast is DSL internet in Sangamon County?
The map below shows maximum DSL internet speeds by area in Sangamon County.
DSL Internet Speed Key
The average Sangamon County home can get up to 56 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 500 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 24.06% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Sangamon County.
DSL internet speeds tend to be faster in the west parts of Sangamon County, and slower in the south areas of the county.
Is DSL the fastest internet I can get in Sangamon County?
The fastest internet for you may vary based on where in Sangamon County you live. In general, cable competes most often with DSL in the county.
- Fiber is the fastest internet type for 38.56% of Sangamon County homes.
- Cable is fastest for 56.09% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 4.64%.
- Satellite internet may be the only option for less than 1% of Sangamon County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Sangamon County, along with details on where in Sangamon County and at what speeds.
EarthLink DSL in Sangamon County, IL
EarthLink DSL coverage
About 57.30%, or 112,503 people, have EarthLink DSL internet available to them in the county. The company covers the entire Sangamon 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 Sangamon County.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Sangamon County. Versus other DSL providers in the area, EarthLink DSL is below average. There are 5 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 58 Mbps.
Show all download speeds
- 33.7% up to 100.0 Mbps
- 12.2% up to 75.0 Mbps
- 22.1% up to 50.0 Mbps
- 8.3% up to 25.0 Mbps
- 23.7% up to 10.0 Mbps
EarthLink DSL upload speeds
In Sangamon County download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other Sangamon County DSL providers. EarthLink 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 Sangamon County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 12 Mbps.
Show all upload speeds
- 45.9% up to 20.0 Mbps
- 22.1% up to 10.0 Mbps
- 8.3% up to 5.0 Mbps
- 23.7% up to 1.0 Mbps
AT&T DSL in Sangamon County, IL
AT&T DSL coverage
About 57.30%, or 112,503 people, have AT&T DSL internet available to them in the county. The company covers the entire Sangamon 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 Sangamon County.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Sangamon County. Versus other DSL providers in the area, AT&T DSL is below average. There are 5 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 58 Mbps.
Show all download speeds
- 33.7% up to 100.0 Mbps
- 12.2% up to 75.0 Mbps
- 22.1% up to 50.0 Mbps
- 8.3% up to 25.0 Mbps
- 23.7% up to 10.0 Mbps
AT&T DSL upload speeds
In Sangamon County download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other Sangamon County DSL providers. AT&T 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 Sangamon County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 12 Mbps.
Show all upload speeds
- 45.9% up to 20.0 Mbps
- 22.1% up to 10.0 Mbps
- 8.3% up to 5.0 Mbps
- 23.7% up to 1.0 Mbps
Frontier Communications DSL in Sangamon County, IL
Frontier DSL coverage
About 15.42%, or 30,280 people, have Frontier DSL internet available to them in the county. The company covers the southwest, northeast, southeast, south, northwest, west, and north Sangamon County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Sangamon County.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in Sangamon County. Versus other DSL providers in the area, Frontier DSL is the slowest. There are 5 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon 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 Sangamon County customers is up to 30 Mbps.
Show all download speeds
- 6.2% up to 115.0 Mbps
- 9.7% up to 90.0 Mbps
- 5.7% up to 70.0 Mbps
- 7.5% up to 45.0 Mbps
- 70.9% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Sangamon County download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is below average where upload speeds are concerned, and the slowest compared to other Sangamon 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 Sangamon 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 2.0 Mbps.
Show all upload speeds
- 6.2% up to 7.0 Mbps
- 9.7% up to 5.0 Mbps
- 13.2% up to 3.0 Mbps
- 70.9% up to 1.0 Mbps
Sangamon County DSL by Area
This information is most helpful to those looking for homes or considering moving to Sangamon County or any of the areas nearby.
How does DSL internet in Sangamon County compare to the rest of Illinois?
DSL internet speeds in Sangamon County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 56 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Illinois is 0.00% versus 72.50% in Sangamon County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Sangamon 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
- Morgan County, IL: less DSL coverage, slower speeds
- Macon County, IL: more DSL coverage, faster speeds
- Scott County, IL: less DSL coverage, slower speeds
- Moultrie County, IL: less DSL coverage, faster speeds
- Pike County, IL: less DSL coverage, slower speeds
- Douglas County, IL: less DSL coverage, faster speeds
- Marion County, MO: less DSL coverage, slower speeds
- Edgar County, IL: less DSL coverage, slower speeds
- Vermillion County, IN: less DSL coverage, slower speeds
- Shelby County, MO: more DSL coverage, slower speeds
Counties with Similar Populations
- Richmond County, GA: less DSL coverage, slower speeds
- Benton County, AR: more DSL coverage, faster speeds
- Benton County, WA: less DSL coverage, slower speeds
- Berkeley County, SC: less DSL coverage, faster speeds
- Yavapai County, AZ: more DSL coverage, slower speeds
- Broome County, NY: less DSL coverage, slower speeds
- Brown County, WI: more DSL coverage, faster speeds
- Buncombe County, NC: more DSL coverage, faster speeds
- Butte County, CA: less DSL coverage, slower speeds
- Cabarrus County, NC: more DSL coverage, faster speeds