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	51558	Moorhead	Monona County	`712`
IA	51559	Neola	Pottawattamie County	`712`
IA	51560	Oakland	Pottawattamie County	`712`
IA	51561	Pacific Junction	Mills County	`402, 531, 712`
IA	51562	Panama	Shelby County	`712`
IA	51563	Persia	Harrison County	`712`
IA	51564	Pisgah	Harrison County	`712`
IA	51565	Portsmouth	Shelby County	`712`
IA	51566	Red Oak	Montgomery County	`712`
IA	51570	Shelby	Shelby County	`712`

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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.