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	50220	Perry	Dallas County	`515`
IA	50222	Peru	Madison County	`515, 641`
IA	50223	Pilot Mound	Boone County	`515`
IA	50225	Pleasantville	Marion County	`515, 641`
IA	50226	Polk City	Polk County	`515`
IA	50227	Popejoy	Franklin County	`515`
IA	50228	Prairie City	Jasper County	`515, 641`
IA	50229	Prole	Warren County	`515, 641`
IA	50230	Radcliffe	Hardin County	`515`
IA	50231	Randall	Hamilton County	`515`

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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.