In Williamson County there are 2 residential Cable providers covering 77.24% of the county. The average home can get speeds up to 1,000 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 Cable internet providers in Williamson County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Williamson County, IL please click below.
Williamson County, IL Availability Maps
Cable Internet Service Providers in Williamson 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 Williamson County are not shown.
Williamson 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 Williamson County is cable internet available?
Cable Internet Availability Key
Cable is available in 77.24% of Williamson County. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is Mediacom. Call one of the companies with service in Williamson County above to see who has service at your home.
How fast is cable internet in Williamson County?
The map below shows maximum cable internet speeds by area in Williamson County.
Cable Internet Speed Key
The average Williamson County home can get up to 1,000 Mbps on their cable internet plan. The fastest cable download speed in the county is 1,000 Mbps, which 77.24% of residents can get.
Is cable the fastest internet I can get in Williamson County?
The fastest internet for you may vary based on where in Williamson County you live. In general, fiber competes most often with cable in the county.
- Fiber is the fastest internet type for 93.99% of Williamson County homes.
- Cable is fastest for 4.36% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.19%.
- Satellite internet may be the only option for less than 1% of Williamson County homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Williamson County, along with details on where in Williamson County and at what speeds.
Mediacom Cable in Williamson County, IL
Mediacom cable coverage
About 73.96%, or 49,664 people, have Mediacom cable internet available to them in the county. The company covers the entire Williamson County area. Mediacom is one of the largest internet service providers internet service providers in the US, with internet service available in much of Williamson County.
Mediacom cable download speeds
Mediacom is below average when comparing download speeds to all other internet providers in Williamson County. Versus other cable providers in the area, Mediacom cable is one of the fastest. There are no different maximum speeds throughout Williamson County. The fastest plan anyone in Williamson County can order from Mediacom goes up to 1,000 Mbps, and all Williamson County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Mediacom cable upload speeds
In Williamson County download speeds tend to be faster than than upload speeds for Mediacom cable. Compared to other ISPs, Mediacom is below average where upload speeds are concerned, and the fastest compared to other Williamson County cable providers. Mediacom offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Williamson County is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Zito Media Cable in Williamson County, IL
Zito cable coverage
About 3.28%, or 2,202 people, have Zito cable internet available to them in the county. The company covers the southeast and south Williamson County area. Zito is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Williamson County.
Zito Media cable download speeds
Zito is below average when comparing download speeds to all other internet providers in Williamson County. Versus other cable providers in the area, Zito cable is one of the fastest. There are no different maximum speeds throughout Williamson County. The fastest plan anyone in Williamson County can order from Zito goes up to 1,000 Mbps, and all Williamson County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Zito Media cable upload speeds
In Williamson County download speeds tend to be faster than than upload speeds for Zito cable. Compared to other ISPs, Zito is below average where upload speeds are concerned, and the slowest compared to other Williamson County cable providers. Zito offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Williamson County is up to 25 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 25.0 Mbps
Williamson County Cable by Area
This information is most helpful to those looking for homes or considering moving to Williamson County or any of the areas nearby.
How does cable internet in Williamson County compare to the rest of Illinois?
Cable internet speeds in Williamson County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 1,000 Mbps in the county. The state has similar cable availability compared to the county. Average cable coverage in Illinois is 0.00% versus 77.24% in Williamson County.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Williamson County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable 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
- Jackson County, IL: less cable coverage, similar speeds
- Saline County, IL: less cable coverage, similar speeds
- Gallatin County, IL: less cable coverage, similar speeds
- Perry County, MO: less cable coverage, similar speeds
- Union County, KY: more cable coverage, similar speeds
- Henderson County, KY: more cable coverage, similar speeds
- St. Francois County, MO: more cable coverage, similar speeds
- Daviess County, KY: more cable coverage, slower speeds
- Hancock County, KY: less cable coverage, faster speeds
- Breckinridge County, KY: less cable coverage, similar speeds
Counties with Similar Populations
- Valencia County, NM: more cable coverage, faster speeds
- White County, AR: less cable coverage, slower speeds
- Pulaski County, KY: more cable coverage, similar speeds
- Otero County, NM: less cable coverage, slower speeds
- Otsego County, NY: less cable coverage, similar speeds
- Oxford County, ME: more cable coverage, similar speeds
- Pender County, NC: more cable coverage, similar speeds
- Pickaway County, OH: more cable coverage, similar speeds
- Pike County, KY: more cable coverage, slower speeds
- Pike County, PA: more cable coverage, faster speeds