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

Indiana ZIP Codes

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

State ZIP Code City County Area Codes
IN 46779 Pleasant Lake Steuben County 260
IN 46780 Pleasant Mills Adams County 260
IN 46781 Poneto Wells County 260, 765
IN 46782 Preble Adams County 260
IN 46783 Roanoke Huntington County 260
IN 46784 Rome City Noble County 260
IN 46785 Saint Joe DeKalb County 260, 419, 567
IN 46786 South Milford LaGrange County 260
IN 46787 South Whitley Whitley County 260
IN 46788 Spencerville Allen County 260, 419, 567
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Geographic Map of Indiana

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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.