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 46345 Kingsbury LaPorte County 219
IN 46346 Kingsford Heights LaPorte County 219
IN 46347 Kouts Porter County 219
IN 46348 La Crosse LaPorte County 219, 574
IN 46349 Lake Village Newton County 219, 779, 815
IN 46350 La Porte LaPorte County 219, 269
IN 46352 La Porte La Porte County 219
IN 46355 Leroy Lake County 219
IN 46356 Lowell Lake County 219, 779, 815
IN 46360 Michigan City LaPorte County 219, 269
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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.