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

Iowa ZIP Codes

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

State ZIP Code City County Area Codes
IA 52750 Goose Lake Clinton County 563
IA 52751 Grand Mound Clinton County 563
IA 52752 Grandview Louisa County 319
IA 52753 Le Claire Scott County 309, 563
IA 52754 Letts Louisa County 319, 563
IA 52755 Lone Tree Johnson County 319
IA 52756 Long Grove Scott County 563
IA 52757 Low Moor Clinton County 563
IA 52758 Mc Causland Scott County 563
IA 52759 Montpelier Muscatine County 563
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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.