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
All states and U.S. territories
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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 62808 Ashley Washington County 618
IL 62809 Barnhill Wayne County 618
IL 62810 Belle Rive Jefferson County 618
IL 62811 Bellmont Wabash County 618
IL 62812 Benton Franklin County 618
IL 62814 Bluford Jefferson County 618
IL 62815 Bone Gap Edwards County 618
IL 62816 Bonnie Jefferson County 618
IL 62817 Broughton Hamilton County 618
IL 62818 Browns Edwards County 618
Page 143 of 159

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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.