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DSDownloadSpeed
FCC Data · Updated April 2026
A

Cook County Internet

Cook County, Illinois has a Broadband Grade of A with an average download speed of 1000 Mbps across 167 ZIP codes. 100% of the county has fiber internet access, and the area averages 10 providers per ZIP code. Internet access is above average for the U.S.

81
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Cook County

A
167
B
0
C
0
D
0
F
0
Best

Fastest ZIP Codes in Cook County

ZIPGradeDownloadProvidersFiber
60004A1000 Mbps10Yes
60005A1000 Mbps10Yes
60007A1000 Mbps10Yes
60008A1000 Mbps10Yes
60010A1000 Mbps10Yes
60016A1000 Mbps10Yes
60018A1000 Mbps10Yes
60022A1000 Mbps10Yes
60025A1000 Mbps10Yes
60026A1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Cook County

ZIPGradeDownloadProvidersFiber
60004A1000 Mbps10Yes
60005A1000 Mbps10Yes
60007A1000 Mbps10Yes
60008A1000 Mbps10Yes
60010A1000 Mbps10Yes
60016A1000 Mbps10Yes
60018A1000 Mbps10Yes
60022A1000 Mbps10Yes
60025A1000 Mbps10Yes
60026A1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Cook County, Illinois?

Cook County, Illinois has an average maximum download speed of 1000 Mbps across 167 ZIP codes. The county received a Broadband Grade of A (81/100), which factors in download speed, provider competition, fiber availability, and upload speed. This meets the FCC broadband standard of 100 Mbps download.

How many internet providers are in Cook County?

Cook County has an average of 10 internet providers per ZIP code. 100% of ZIP codes in the county have fiber internet access. Having 3 or more providers typically leads to better prices and service quality through competition.

Is there fiber internet in Cook County?

100% of ZIP codes in Cook County, Illinois have fiber internet available. Fiber provides the fastest and most reliable connections, typically 500 Mbps to 5 Gbps with symmetrical upload speeds. Fiber coverage in this county is above the national average.

What is the best ZIP code for internet in Cook County?

The best-connected ZIP code in Cook County is 60004 with a Broadband Grade of A, 1000 Mbps maximum download, and 10 providers. Fiber internet is available in this ZIP code.

Test Your Speed

See how your connection compares to Cook County's 1000 Mbps average.