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

Indiana ZIP Codes

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

State ZIP Code City County Area Codes
IN 47434 Harrodsburg Monroe County 812, 930
IN 47435 Helmsburg Brown County 812, 930
IN 47436 Heltonville Lawrence County 812, 930
IN 47437 Huron Lawrence County 812, 930
IN 47438 Jasonville Greene County 812, 930
IN 47439 Koleen Greene County 812
IN 47441 Linton Greene County 812, 930
IN 47443 Lyons Greene County 812, 930
IN 47445 Midland Greene County 812, 930
IN 47446 Mitchell Lawrence County 812, 930
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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.