In Decatur there are 3 residential DSL providers covering 88.40% of the city. The average home can get speeds up to 66 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 Decatur, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Decatur, IL please click below.
DSL Internet Service Providers in Decatur
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 Decatur are not shown.
Decatur 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 Decatur is DSL internet available?
DSL Internet Availability Key
DSL is available in 88.40% of Decatur. 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 Decatur above to see who has service at your home.
How fast is DSL internet in Decatur?
The map below shows maximum DSL internet speeds by area in Decatur.
DSL Internet Speed Key
The average Decatur home can get up to 66 Mbps on their DSL internet plan. The fastest DSL download speed in the city 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, 22.48% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Decatur.
DSL internet speeds tend to be faster in the southeast parts of Decatur, and slower in the north areas of the city.
Is DSL the fastest internet I can get in Decatur?
The fastest internet for you may vary based on where in Decatur you live. In general, cable competes most often with DSL in the city.
- Fiber is the fastest internet type for 1.97% of Decatur homes.
- Cable is fastest for 95.33% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.23%.
- Satellite internet may be the only option for 1.47% of Decatur homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Decatur, along with details on where in Decatur and at what speeds.
EarthLink DSL in Decatur, IL
EarthLink DSL coverage
About 87.72%, or 67,587 people, have EarthLink DSL internet available to them in the city. The company covers the entire Decatur area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Decatur.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Decatur. Versus other DSL providers in the area, EarthLink DSL is below average. There are 5 different maximum speeds throughout Decatur. The fastest plan anyone in Decatur can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Decatur customers is up to 61 Mbps.
Show all download speeds
- 36.8% up to 100.0 Mbps
- 13.3% up to 75.0 Mbps
- 21.0% up to 50.0 Mbps
- 3.2% up to 25.0 Mbps
- 25.7% up to 10.0 Mbps
EarthLink DSL upload speeds
In Decatur 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 Decatur DSL providers. EarthLink offers 4 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 Decatur 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 13 Mbps.
Show all upload speeds
- 50.1% up to 20.0 Mbps
- 21.0% up to 10.0 Mbps
- 3.2% up to 5.0 Mbps
- 25.7% up to 1.0 Mbps
AT&T DSL in Decatur, IL
AT&T DSL coverage
About 87.72%, or 67,587 people, have AT&T DSL internet available to them in the city. The company covers the entire Decatur area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Decatur.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in Decatur. Versus other DSL providers in the area, AT&T DSL is below average. There are 5 different maximum speeds throughout Decatur. The fastest plan anyone in Decatur can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Decatur customers is up to 61 Mbps.
Show all download speeds
- 36.8% up to 100.0 Mbps
- 13.3% up to 75.0 Mbps
- 21.0% up to 50.0 Mbps
- 3.2% up to 25.0 Mbps
- 25.7% up to 10.0 Mbps
AT&T DSL upload speeds
In Decatur 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 Decatur DSL providers. AT&T offers 4 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 Decatur 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 13 Mbps.
Show all upload speeds
- 50.1% up to 20.0 Mbps
- 21.0% up to 10.0 Mbps
- 3.2% up to 5.0 Mbps
- 25.7% up to 1.0 Mbps
Fidium Fiber DSL in Decatur, IL
Fidium DSL coverage
About 1.06%, or 818 people, have Fidium DSL internet available to them in the city. The company covers the northwest, southeast, west, central, and southwest Decatur area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Decatur.
Fidium Fiber DSL download speeds
Fidium is below average when comparing download speeds to all other internet providers in Decatur. Versus other DSL providers in the area, Fidium DSL is the fastest. There are 3 different maximum speeds throughout Decatur. The fastest plan anyone in Decatur can order from Fidium goes up to 500 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Decatur customers is up to 472 Mbps.
Show all download speeds
- 94.1% up to 500.0 Mbps
- 0.9% up to 100.0 Mbps
- 5.0% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Decatur 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 Decatur DSL providers. Fidium offers 3 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 Decatur 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 71 Mbps.
Show all upload speeds
- 94.1% up to 75.0 Mbps
- 0.9% up to 10.0 Mbps
- 5.0% up to 1.0 Mbps
Decatur DSL by Area
This information is most helpful to those looking for homes or considering moving to Decatur or any of the areas nearby.
How does DSL internet in Decatur compare to the rest of Illinois?
DSL internet speeds in Decatur are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 66 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Illinois is 0.00% versus 88.40% in Decatur.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Decatur 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 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
- Elwin, IL: less DSL coverage, slower speeds
- Forsyth, IL: less DSL coverage, slower speeds
- Long Creek, IL: less DSL coverage, slower speeds
- Harristown, IL: less DSL coverage, faster speeds
- Mount Zion, IL: less DSL coverage, slower speeds
- Oreana, IL: less DSL coverage, slower speeds
- Boody, IL: less DSL coverage, slower speeds
- Warrensburg, IL: less DSL coverage, slower speeds
- Oakley, IL: less DSL coverage, slower speeds
- Argenta, IL: less DSL coverage, slower speeds
Cities with Similar Populations
- Stockbridge, GA: less DSL coverage, faster speeds
- Sunrise Manor, NV: more DSL coverage, slower speeds
- Sylmar, CA: less DSL coverage, slower speeds
- Sterling Heights, MI: more DSL coverage, faster speeds
- Sunrise, FL: more DSL coverage, faster speeds
- Summerville, SC: less DSL coverage, faster speeds
- Sugar Land, TX: less DSL coverage, faster speeds
- Temecula, CA: less DSL coverage, slower speeds
- Temple, TX: less DSL coverage, slower speeds
- Thornton, CO: more DSL coverage, faster speeds