In Cook County there are 3 residential Fiber providers covering 36.41% of the county. The average home can get speeds up to 3,598 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 Cook County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Cook County, IL please click below.
Cook County, IL Availability Maps
Fiber Internet Service Providers in Cook 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 Cook County are not shown.
Cook 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 Cook County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 36.41% of Cook County. Areas in green have fiber 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 Cook County above to see who has service at your home.
How fast is fiber internet in Cook County?
The map below shows maximum fiber internet speeds by area in Cook County.
Fiber Internet Speed Key
The average Cook County home can get up to 3,598 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 5,120 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, less than 1% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Cook County.
Fiber internet speeds tend to be faster in the west parts of Cook County, and slower in the northeast areas of the county.
Is fiber the fastest internet I can get in Cook County?
The fastest internet for you may vary based on where in Cook County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 24.80% of Cook County homes.
- Cable is fastest for 74.26% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of Cook County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Cook County, along with details on where in Cook County and at what speeds.
EarthLink Fiber in Cook County, IL
EarthLink fiber coverage
About 32.05%, or 1,690,753 people, have EarthLink fiber internet available to them in the county. The company covers the entire Cook County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Cook County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Cook County. Versus other fiber providers in the area, EarthLink fiber is above average. There are 3 different maximum speeds throughout Cook County. The fastest plan anyone in Cook County can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Cook County customers is up to 3,849 Mbps.
Show all download speeds
- 71.2% up to 5,000.0 Mbps
- 28.8% up to 1,000.0 Mbps
- 0.0% up to 10.0 Mbps
EarthLink fiber upload speeds
In Cook County download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and above average compared to other Cook County fiber providers. EarthLink offers 3 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 Cook County is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 3,849 Mbps.
Show all upload speeds
- 71.2% up to 5,000.0 Mbps
- 28.8% up to 1,000.0 Mbps
- 0.0% up to 1.0 Mbps
AT&T Fiber in Cook County, IL
AT&T fiber coverage
About 32.05%, or 1,690,753 people, have AT&T fiber internet available to them in the county. The company covers the entire Cook County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Cook County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Cook County. Versus other fiber providers in the area, AT&T fiber is above average. There are 3 different maximum speeds throughout Cook County. The fastest plan anyone in Cook County can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Cook County customers is up to 3,849 Mbps.
Show all download speeds
- 71.2% up to 5,000.0 Mbps
- 28.8% up to 1,000.0 Mbps
- 0.0% up to 10.0 Mbps
AT&T fiber upload speeds
In Cook County download speeds tend to be faster than than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and above average compared to other Cook County fiber providers. AT&T offers 3 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 Cook County is up to 5,000 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 3,849 Mbps.
Show all upload speeds
- 71.2% up to 5,000.0 Mbps
- 28.8% up to 1,000.0 Mbps
- 0.0% up to 1.0 Mbps
Astound Broadband Fiber in Cook County, IL
Astound Broadband fiber coverage
About 9.75%, or 514,308 people, have Astound Broadband fiber internet available to them in the county. The company covers the east, north, central, south, northeast, southeast, and northwest Cook County area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Cook County.
Astound Broadband fiber download speeds
Astound Broadband is above average when comparing download speeds to all other internet providers in Cook County. Versus other fiber providers in the area, Astound Broadband fiber is the slowest. There are no different maximum speeds throughout Cook County. The fastest plan anyone in Cook County can order from Astound Broadband goes up to 1,500 Mbps, and all Cook County customers can get this speed.
Show all download speeds
- 100.0% up to 1,500.0 Mbps
Astound Broadband fiber upload speeds
In Cook County download speeds tend to be equal to than upload speeds for Astound Broadband fiber. Compared to other ISPs, Astound Broadband is above average where upload speeds are concerned, and below average compared to other Cook County fiber providers. Astound Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Cook County is up to 1,500 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,500.0 Mbps
Cook County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Cook County or any of the areas nearby.
How does fiber internet in Cook County compare to the rest of Illinois?
Fiber internet speeds in Cook County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 3,598 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Illinois is 0.00% versus 36.41% in Cook County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Cook 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
- DuPage County, IL: less fiber coverage, faster speeds
- Kane County, IL: more fiber coverage, faster speeds
- DeKalb County, IL: more fiber coverage, faster speeds
- Berrien County, MI: more fiber coverage, faster speeds
- Lee County, IL: more fiber coverage, faster speeds
- Cass County, MI: more fiber coverage, slower speeds
- Whiteside County, IL: more fiber coverage, slower speeds
- St. Joseph County, MI: more fiber coverage, faster speeds
- Clinton County, IA: more fiber coverage, slower speeds
- Branch County, MI: more fiber coverage, slower speeds
Counties with Similar Populations
- Orange County, CA: more fiber coverage, faster speeds
- Maricopa County, AZ: more fiber coverage, slower speeds
- Los Angeles County, CA: more fiber coverage, faster speeds
- San Diego County, CA: more fiber coverage, faster speeds
- Harris County, TX: more fiber coverage, faster speeds
- Miami-Dade County, FL: more fiber coverage, faster speeds
- Kings County, NY: more fiber coverage, faster speeds
- Dallas County, TX: more fiber coverage, faster speeds
- Denton County, TX: more fiber coverage, faster speeds
- Butler County, OH: more fiber coverage, slower speeds