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ZIP codes in Cass County, North Dakota

Cass County, North Dakota has 34 ZIP codes in this list, from 58002 to 58126. They cover 22 places, among them Fargo, Absaraka, Amenia and Argusville.

The ZIP code areas of Cass County add up to about 1,859 square miles of land (4,815 sq km) as the Census Bureau draws them. The largest is 58064 (Page), with 176 square miles.

Places with more than one code here: Fargo (13 codes).

Using these codes

Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.

All of North Dakota ZIP look-up