In Mercer County there are 2 residential DSL providers covering 42.86% of the county. The average home can get speeds up to 34 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 Mercer County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Mercer County, IL please click below.
Mercer County, IL Availability Maps
DSL Internet Service Providers in Mercer 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 Mercer County are not shown.
Mercer 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 Mercer County is DSL internet available?
DSL Internet Availability Key
DSL is available in 42.86% of Mercer 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 Mercer County above to see who has service at your home.
How fast is DSL internet in Mercer County?
The map below shows maximum DSL internet speeds by area in Mercer County.
DSL Internet Speed Key
The average Mercer County home can get up to 34 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 115 Mbps, which 2.43% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 27.40% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Mercer County.
DSL internet speeds tend to be faster in the south parts of Mercer County, and slower in the southeast areas of the county.
Is DSL the fastest internet I can get in Mercer County?
The fastest internet for you may vary based on where in Mercer County you live. In general, fiber competes most often with DSL in the county.
- Fiber is the fastest internet type for 55.49% of Mercer County homes.
- Cable is fastest for 22.93% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 20.48%.
- Satellite internet may be the only option for less than 1% of Mercer County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Mercer County, along with details on where in Mercer County and at what speeds.
Frontier Communications DSL in Mercer County, IL
Frontier DSL coverage
About 35.70%, or 5,605 people, have Frontier DSL internet available to them in the county. The company covers the entire Mercer County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in some of Mercer County.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in Mercer County. Versus other DSL providers in the area, Frontier DSL is average. There are 5 different maximum speeds throughout Mercer County. The fastest plan anyone in Mercer 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 Mercer County customers is up to 34 Mbps.
Show all download speeds
- 6.8% up to 115.0 Mbps
- 14.1% up to 90.0 Mbps
- 6.1% up to 70.0 Mbps
- 4.1% up to 45.0 Mbps
- 68.9% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Mercer 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 below average compared to other Mercer 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 Mercer 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 2.2 Mbps.
Show all upload speeds
- 6.8% up to 7.0 Mbps
- 14.1% up to 5.0 Mbps
- 10.2% up to 3.0 Mbps
- 68.9% up to 1.0 Mbps
New Windsor Telephone and Cable TV DSL in Mercer County, IL
New Windsor Telephone and Cable TV DSL coverage
About 7.10%, or 1,114 people, have New Windsor Telephone and Cable TV DSL internet available to them in the county. The company covers the east, northeast, and southeast Mercer County area. New Windsor Telephone and Cable TV is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Mercer County.
New Windsor Telephone and Cable TV DSL download speeds
New Windsor Telephone and Cable TV is below average when comparing download speeds to all other internet providers in Mercer County. Versus other DSL providers in the area, New Windsor Telephone and Cable TV DSL is the fastest. There are 2 different maximum speeds throughout Mercer County. The fastest plan anyone in Mercer County can order from New Windsor Telephone and Cable TV goes up to 50 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Mercer County customers is up to 35 Mbps.
Show all download speeds
- 61.7% up to 50.0 Mbps
- 38.3% up to 10.0 Mbps
New Windsor Telephone and Cable TV DSL upload speeds
In Mercer County download speeds tend to be faster than than upload speeds for New Windsor Telephone and Cable TV DSL. Compared to other ISPs, New Windsor Telephone and Cable TV is below average where upload speeds are concerned, and the fastest compared to other Mercer County DSL providers. New Windsor Telephone and Cable TV 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 Mercer County is up to 15 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, New Windsor Telephone and Cable TV customers can get speeds up to 9.6 Mbps.
Show all upload speeds
- 61.7% up to 15.0 Mbps
- 38.3% up to 1.0 Mbps
Mercer County DSL by Area
This information is most helpful to those looking for homes or considering moving to Mercer County or any of the areas nearby.
How does DSL internet in Mercer County compare to the rest of Illinois?
DSL internet speeds in Mercer County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 34 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Illinois is 0.00% versus 42.86% in Mercer County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Mercer 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
- Louisa County, IA: more DSL coverage, faster speeds
- Henry County, IL: more DSL coverage, slower speeds
- Washington County, IA: more DSL coverage, faster speeds
- Bureau County, IL: more DSL coverage, slower speeds
- Putnam County, IL: more DSL coverage, faster speeds
- Keokuk County, IA: more DSL coverage, faster speeds
- LaSalle County, IL: more DSL coverage, slower speeds
- Mahaska County, IA: more DSL coverage, faster speeds
- Grundy County, IL: more DSL coverage, faster speeds
- Marion County, IA: more DSL coverage, faster speeds
Counties with Similar Populations
- Worth County, GA: less DSL coverage, slower speeds
- Jones County, IA: more DSL coverage, slower speeds
- Jones County, NC: more DSL coverage, faster speeds
- Yalobusha County, MS: more DSL coverage, slower speeds
- Juab County, UT: more DSL coverage, faster speeds
- Wyoming County, WV: more DSL coverage, faster speeds
- Wyandot County, OH: more DSL coverage, slower speeds
- Wright County, MO: more DSL coverage, faster speeds
- Kane County, UT: less DSL coverage, faster speeds
- Wright County, IA: more DSL coverage, slower speeds