Best Internet in Cook, IL
1000 Mbps avg · 167 ZIP codes · 100% fiber · 10 providers/ZIP
Internet Providers in Cook
| Provider | ZIP Codes Served | % of Area |
|---|---|---|
| Comcast | 167 | 100% |
| At&T Illinois | 167 | 100% |
| T-Mobile | 167 | 100% |
| King Street L.p. | 167 | 100% |
| United States Cellular Corporation | 167 | 100% |
| Rise Broadband | 167 | 100% |
| Frontier North Illinois Gte | 167 | 100% |
| Wisper Isp, LLC | 167 | 100% |
ZIP Codes in Cook
Showing 50 of 167 ZIP codes.
See how your connection compares to the 1000 Mbps average in Cook.
Frequently Asked Questions
What is the average internet speed in Cook, IL?
Cook, Illinois has an average maximum download speed of 1000 Mbps across 167 ZIP codes. The fastest available speed is 1000 Mbps. 100% of ZIP codes have fiber internet.
Who are the best internet providers in Cook?
The most widely available providers in Cook are Comcast (167 ZIPs), At&T Illinois (167 ZIPs), T-Mobile (167 ZIPs). Check individual ZIP codes for exact availability at your address.
Is fiber internet available in Cook?
Yes, fiber internet is available in 100% of Cook's ZIP codes. Fiber coverage is good in this area. Search your specific ZIP code for exact fiber availability.
How does Cook compare to the rest of Illinois?
Cook has an average Broadband Grade of A (81/100). The Cook area averages 10 providers per ZIP code with 100% fiber access. Check the Illinois overview for statewide comparison.
The this entity record above pulls directly from the FCC Broadband Data Collection (BDC). What follows is the per-entity context — how this entity sits in the broader U.S. internet availability and broadband speed distribution and which underlying factors drive the headline numbers.
The methodology behind every numeric value on this page is publicly documented on the the FCC Broadband Data Collection (BDC) portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: FCC Broadband Data Collection, 2026.