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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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 58237 Grafton Walsh County 218, 701
ND 58238 Hamilton Pembina County 701
ND 58239 Hannah Cavalier County 204, 431, 584, 701
ND 58240 Hatton Traill County 701
ND 58241 Hensel Pembina County 701
ND 58243 Hoople Walsh County 701
ND 58244 Inkster Grand Forks County 701
ND 58249 Langdon Cavalier County 204, 431, 584, 701
ND 58250 Lankin Walsh County 701
ND 58251 Larimore Grand Forks 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.