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 58639 Hettinger Adams County 605, 701
ND 58640 Killdeer Dunn County 701
ND 58641 Lefor Stark County 701
ND 58642 Manning Dunn County 701
ND 58643 Marmarth Slope County 306, 406, 474, 701
ND 58644 Marshall Dunn County 701
ND 58645 Medora Billings County 701
ND 58646 Mott Hettinger County 701
ND 58647 New England Hettinger County 701
ND 58649 Reeder Adams County 605, 701
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Geographic Map of North Dakota

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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.