U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
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State directory

Illinois ZIP Codes

Complete postal directory, details, and geographic map for the State of Illinois.

State ZIP Code City County Area Codes
IL 60161 Melrose Park Cook County 708
IL 60162 Hillside Cook County 464, 708
IL 60163 Berkeley Cook County 331, 464, 630, 708
IL 60164 Melrose Park Cook County 224, 331, 464, 630, 708, 847
IL 60165 Stone Park Cook County 464, 708
IL 60168 Schaumburg Cook County 224
IL 60169 Hoffman Estates Cook County 224, 331, 630, 847
IL 60170 Plato Center Kane County 224, 847
IL 60171 River Grove Cook County 224, 464, 708, 773, 847, 872
IL 60172 Roselle DuPage County 224, 331, 630, 847
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.