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	50071	Dows	Wright County	`515, 641`
IA	50072	Earlham	Madison County	`515`
IA	50073	Elkhart	Polk County	`515`
IA	50074	Ellston	Ringgold County	`641`
IA	50075	Ellsworth	Hamilton County	`515`
IA	50076	Exira	Audubon County	`641, 712`
IA	50078	Ferguson	Marshall County	`641`
IA	50099	Boone	Boone County	`515`
IA	50101	Galt	Wright County	`515, 641`
IA	50102	Garden City	Hardin 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.