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.

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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 58001 Abercrombie Richland County 218, 701
ND 58002 Absaraka Cass County 701
ND 58004 Amenia Cass County 701
ND 58005 Argusville Cass County 218, 701
ND 58006 Arthur Cass County 701
ND 58007 Ayr Cass County 701
ND 58008 Barney Richland County 701
ND 58009 Blanchard Traill County 701
ND 58011 Buffalo Cass County 701
ND 58012 Casselton Cass 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.