In DeKalb County there are 2 residential DSL providers covering 81.44% of the county. The average home can get speeds up to 27 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 DeKalb County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in DeKalb County, IL please click below.
DeKalb County, IL Availability Maps
DSL Internet Service Providers in DeKalb 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 DeKalb County are not shown.
DeKalb 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 DeKalb County is DSL internet available?
DSL Internet Availability Key
DSL is available in 81.44% of DeKalb 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 DeKalb County above to see who has service at your home.
How fast is DSL internet in DeKalb County?
The map below shows maximum DSL internet speeds by area in DeKalb County.
DSL Internet Speed Key
The average DeKalb County home can get up to 27 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 150 Mbps, which 2.32% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 63.85% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in DeKalb County.
DSL internet speeds tend to be faster in the northwest parts of DeKalb County, and slower in the east areas of the county.
Is DSL the fastest internet I can get in DeKalb County?
The fastest internet for you may vary based on where in DeKalb County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 75.46% of DeKalb County homes.
- Cable is fastest for 13.64% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 7.18%.
- Satellite internet may be the only option for 3.54% of DeKalb County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in DeKalb County, along with details on where in DeKalb County and at what speeds.
Frontier Communications DSL in DeKalb County, IL
Frontier DSL coverage
About 70.59%, or 70,882 people, have Frontier DSL internet available to them in the county. The company covers the entire DeKalb County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in much of DeKalb County.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in DeKalb County. Versus other DSL providers in the area, Frontier DSL is the fastest. There are 5 different maximum speeds throughout DeKalb County. The fastest plan anyone in DeKalb 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 DeKalb County customers is up to 26 Mbps.
Show all download speeds
- 6.2% up to 115.0 Mbps
- 5.7% up to 90.0 Mbps
- 4.8% up to 70.0 Mbps
- 6.7% up to 45.0 Mbps
- 76.6% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In DeKalb 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 DeKalb 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 DeKalb 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 1.8 Mbps.
Show all upload speeds
- 6.2% up to 7.0 Mbps
- 5.7% up to 5.0 Mbps
- 11.5% up to 3.0 Mbps
- 76.6% up to 1.0 Mbps
DNA Com DSL in DeKalb County, IL
DNA Com DSL coverage
About 61.27%, or 61,524 people, have DNA Com DSL internet available to them in the county. The company covers the west, central, north, northeast, southeast, and east DeKalb County area. DNA Com is a large internet service provider internet service providers in the US, with internet service available in a majority of DeKalb County.
DNA Com DSL download speeds
DNA Com is below average when comparing download speeds to all other internet providers in DeKalb County. Versus other DSL providers in the area, DNA Com DSL is the slowest. There are 3 different maximum speeds throughout DeKalb County. The fastest plan anyone in DeKalb County can order from DNA Com goes up to 150 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for DeKalb County customers is up to 17 Mbps.
Show all download speeds
- 3.8% up to 150.0 Mbps
- 3.0% up to 75.0 Mbps
- 93.2% up to 10.0 Mbps
DNA Com DSL upload speeds
In DeKalb County download speeds tend to be faster than than upload speeds for DNA Com DSL. Compared to other ISPs, DNA Com is below average where upload speeds are concerned, and the fastest compared to other DeKalb County DSL providers. DNA Com offers 2 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 DeKalb County is up to 40 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, DNA Com customers can get speeds up to 3.6 Mbps.
Show all upload speeds
- 6.8% up to 40.0 Mbps
- 93.2% up to 1.0 Mbps
DeKalb County DSL by Area
This information is most helpful to those looking for homes or considering moving to DeKalb County or any of the areas nearby.
How does DSL internet in DeKalb County compare to the rest of Illinois?
DSL internet speeds in DeKalb County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 27 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Illinois is 0.00% versus 81.44% in DeKalb County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around DeKalb 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
- Kane County, IL: more DSL coverage, faster speeds
- Ogle County, IL: less DSL coverage, faster speeds
- DuPage County, IL: more DSL coverage, faster speeds
- Lee County, IL: less DSL coverage, faster speeds
- Cook County, IL: more DSL coverage, faster speeds
- Carroll County, IL: less DSL coverage, faster speeds
- Clinton County, IA: more DSL coverage, faster speeds
- Berrien County, MI: less DSL coverage, faster speeds
- Cass County, MI: less DSL coverage, slower speeds
- Linn County, IA: more DSL coverage, faster speeds
Counties with Similar Populations
- Sutter County, CA: more DSL coverage, faster speeds
- Madison County, KY: less DSL coverage, faster speeds
- Adams County, PA: less DSL coverage, faster speeds
- Limestone County, AL: less DSL coverage, faster speeds
- Sumter County, SC: less DSL coverage, faster speeds
- Lenawee County, MI: less DSL coverage, slower speeds
- Lauderdale County, AL: less DSL coverage, faster speeds
- LaSalle County, IL: less DSL coverage, slower speeds
- Laramie County, WY: more DSL coverage, faster speeds
- Madison County, MS: less DSL coverage, faster speeds