In Jefferson County there are 3 residential Fiber providers covering 93.36% of the county. The average home can get speeds up to 6,749 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 Fiber internet providers in Jefferson County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Jefferson County, IL please click below.
Jefferson County, IL Availability Maps
Fiber Internet Service Providers in Jefferson 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 Jefferson County are not shown.
Jefferson 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 Jefferson County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 93.36% of Jefferson County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Cable One. Call one of the companies with service in Jefferson County above to see who has service at your home.
How fast is fiber internet in Jefferson County?
The map below shows maximum fiber internet speeds by area in Jefferson County.
Fiber Internet Speed Key
The average Jefferson County home can get up to 6,749 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 7,000 Mbps, which 89.46% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 3.91% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Jefferson County.
Fiber internet speeds tend to be faster in the central parts of Jefferson County, and slower in the south areas of the county.
Is fiber the fastest internet I can get in Jefferson County?
The fastest internet for you may vary based on where in Jefferson County you live. In general, fixed wireless competes most often with fiber in the county.
- Fiber is the fastest internet type for 93.36% of Jefferson County homes.
- Cable is fastest for 1.83% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 3.68%.
- Satellite internet may be the only option for less than 1% of Jefferson County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Jefferson County, along with details on where in Jefferson County and at what speeds.
Sparklight Fiber in Jefferson County, IL
Sparklight fiber coverage
About 89.46%, or 33,200 people, have Sparklight fiber internet available to them in the county. The company covers the entire Jefferson County area. Sparklight is one of the largest internet service providers internet service providers in the US, with internet service available in most of Jefferson County.
Sparklight fiber download speeds
Sparklight is the fastest when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Sparklight fiber is the fastest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Sparklight goes up to 7,000 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 7,000.0 Mbps
Sparklight fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for Sparklight fiber. Compared to other ISPs, Sparklight is the fastest where upload speeds are concerned, and the fastest compared to other Jefferson County fiber providers. Sparklight offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 7,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7,000.0 Mbps
Hamilton County Communications Fiber in Jefferson County, IL
Hamilton County Communications fiber coverage
About 6.04%, or 2,241 people, have Hamilton County Communications fiber internet available to them in the county. The company covers the south and southeast Jefferson County area. Hamilton County Communications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson County.
Hamilton County Communications fiber download speeds
Hamilton County Communications is above average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Hamilton County Communications fiber is one of the slowest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Hamilton County Communications goes up to 1,000 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Hamilton County Communications fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for Hamilton County Communications fiber. Compared to other ISPs, Hamilton County Communications is above average where upload speeds are concerned, and one of the slowest compared to other Jefferson County fiber providers. Hamilton County Communications offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Wabash Communications Fiber in Jefferson County, IL
Wabash Communications fiber coverage
About 4.63%, or 1,720 people, have Wabash Communications fiber internet available to them in the county. The company covers the northeast Jefferson County area. Wabash Communications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson County.
Wabash Communications fiber download speeds
Wabash Communications is above average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Wabash Communications fiber is one of the slowest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Wabash Communications goes up to 1,000 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Wabash Communications fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for Wabash Communications fiber. Compared to other ISPs, Wabash Communications is above average where upload speeds are concerned, and one of the slowest compared to other Jefferson County fiber providers. Wabash Communications offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Jefferson County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Jefferson County or any of the areas nearby.
How does fiber internet in Jefferson County compare to the rest of Illinois?
Fiber internet speeds in Jefferson County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 6,749 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Illinois is 0.00% versus 93.36% in Jefferson County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Jefferson County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber 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
- Washington County, IL: less fiber coverage, slower speeds
- Wayne County, IL: less fiber coverage, slower speeds
- Edwards County, IL: more fiber coverage, faster speeds
- Wabash County, IL: less fiber coverage, slower speeds
- Monroe County, IL: less fiber coverage, slower speeds
- Gibson County, IN: less fiber coverage, slower speeds
- Jefferson County, MO: less fiber coverage, slower speeds
- Pike County, IN: less fiber coverage, slower speeds
- Dubois County, IN: more fiber coverage, slower speeds
- Franklin County, MO: less fiber coverage, slower speeds
Counties with Similar Populations
- Suwannee County, FL: less fiber coverage, slower speeds
- Del Norte County, CA: less fiber coverage, slower speeds
- Delaware County, OK: less fiber coverage, slower speeds
- Delta County, CO: more fiber coverage, slower speeds
- Delta County, MI: less fiber coverage, slower speeds
- Des Moines County, IA: less fiber coverage, slower speeds
- Douglas County, WI: less fiber coverage, slower speeds
- Dubois County, IN: more fiber coverage, slower speeds
- Dunn County, WI: less fiber coverage, slower speeds
- Stephenson County, IL: less fiber coverage, slower speeds