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	50146	Linden	Dallas County	`515, 641`
IA	50147	Lineville	Wayne County	`641, 660`
IA	50148	Liscomb	Marshall County	`641`
IA	50149	Lorimor	Union County	`641`
IA	50150	Lovilia	Monroe County	`641`
IA	50151	Lucas	Lucas County	`641`
IA	50152	Luther	Boone County	`515`
IA	50153	Lynnville	Jasper County	`641`
IA	50154	Mc Callsburg	Story County	`515, 641`
IA	50155	Macksburg	Madison County	`515, 641`

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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.