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

Traill County ZIP Codes

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

County State ZIP Code City Area Codes
Traill County ND 58009 Blanchard 701
Traill County ND 58016 Clifford 701
Traill County ND 58035 Galesburg 701
Traill County ND 58045 Hillsboro 218, 701
Traill County ND 58218 Buxton 218, 701
Traill County ND 58219 Caledonia 218, 701
Traill County ND 58223 Cummings 218, 701
Traill County ND 58240 Hatton 701
Traill County ND 58257 Mayville 701
Traill County ND 58274 Portland 701

Geographic Map of Traill 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.