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 46143 Greenwood Johnson County 317, 463
IN 46144 Gwynneville Shelby County 765
IN 46146 Homer Rush County 765
IN 46147 Jamestown Boone County 317, 463, 765
IN 46148 Knightstown Henry County 317, 463, 765
IN 46149 Lizton Hendricks County 317, 463, 765
IN 46150 Manilla Rush County 765
IN 46151 Martinsville Morgan County 317, 463, 765, 812, 930
IN 46154 Maxwell Hancock County 317, 463
IN 46155 Mays Rush County 765
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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.