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 46542 Milford Kosciusko County 574
IN 46543 Millersburg Elkhart County 260, 574
IN 46544 Mishawaka St. Joseph County 574
IN 46545 Mishawaka St. Joseph County 574
IN 46546 Mishawaka St. Joseph County 574
IN 46550 Nappanee Elkhart County 574
IN 46552 New Carlisle St. Joseph County 219, 269, 574
IN 46553 New Paris Elkhart County 574
IN 46554 North Liberty St. Joseph County 219, 574
IN 46555 North Webster Kosciusko County 260, 574
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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.