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

North Dakota ZIP Codes

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

State ZIP Code City County Area Codes
ND 58576 Underwood McLean County 701
ND 58577 Washburn McLean County 701
ND 58579 Wilton McLean County 701
ND 58580 Zap Mercer County 701
ND 58581 Zeeland McIntosh County 605, 701
ND 58601 Dickinson Stark County 701
ND 58602 Dickinson Stark County 701
ND 58620 Amidon Slope County 701
ND 58621 Beach Golden Valley County 306, 406, 474, 701
ND 58622 Belfield Stark County 701
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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.