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

Iowa ZIP Codes

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

State ZIP Code City County Area Codes
IA 52501 Ottumwa Wapello County 641
IA 52530 Agency Wapello County 641
IA 52531 Albia Monroe County 641
IA 52533 Batavia Jefferson County 319, 641
IA 52534 Beacon Mahaska County 641
IA 52535 Birmingham Van Buren County 319, 641
IA 52536 Blakesburg Wapello County 641
IA 52537 Bloomfield Davis County 319, 641, 660
IA 52538 West Grove Davis County 641
IA 52540 Brighton Washington County 319
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Geographic Map of Iowa

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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.