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
All states and U.S. territories
Maps and coordinates
County directory

Cavalier County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Cavalier County.

County State ZIP Code City Area Codes
Cavalier County ND 58239 Hannah 204, 431, 584, 701
Cavalier County ND 58249 Langdon 204, 431, 584, 701
Cavalier County ND 58255 Maida 204, 431, 584, 701
Cavalier County ND 58260 Milton 701
Cavalier County ND 58269 Osnabrock 701
Cavalier County ND 58281 Wales 701
Cavalier County ND 58311 Alsen 701
Cavalier County ND 58323 Calvin 701
Cavalier County ND 58352 Munich 701
Cavalier County ND 58355 Nekoma 701
Page 1 of 2

Geographic Map of Cavalier County

Postal context

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.