ZIP codes in Cook County, Illinois
Cook County, Illinois has 213 ZIP codes in this list, from 60004 to 60827. They cover 94 places, among them Chicago, Palatine, Schaumburg and Evanston.
Nothing in this county matches.
The ZIP code areas of Cook County add up to about 870 square miles of land (2,253 sq km) as the Census Bureau draws them. The largest is 60411 (Chicago Heights), with 30.7 square miles.
Places with more than one code here: Chicago (84 codes), Palatine (7 codes), Schaumburg (7 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Arlington Heights, IL 60004.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.