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 47521 Celestine Dubois County 812, 930
IN 47522 Crane Martin County 812, 930
IN 47523 Dale Spencer County 812, 930
IN 47524 Decker Knox County 812, 930
IN 47525 Derby Perry County 270, 364, 812, 930
IN 47527 Dubois Dubois County 812, 930
IN 47528 Edwardsport Knox County 812, 930
IN 47529 Elnora Daviess County 812, 930
IN 47531 Evanston Spencer County 812, 930
IN 47532 Ferdinand Dubois 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.