ZIP CodesZIP codes in McKenzie County, North Dakota
McKenzie County, North Dakota has 7 ZIP codes in this list, from 58634 to 58854. They cover 7 places, among them Grassy Butte, Mandaree, Alexander and Arnegard.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 58634 | Grassy Butte | 375 | 47.443, -103.294 |
| 58757 | Mandaree | 342 | 47.729, -102.676 |
| 58831 | Alexander | 416 | 47.795, -103.655 |
| 58835 | Arnegard | 241 | 47.809, -103.454 |
| 58838 | Cartwright | 257 | 47.799, -103.949 |
| 58847 | Keene | 176 | 47.941, -102.891 |
| 58854 | Watford City | 666 | 47.804, -103.258 |
The ZIP code areas of McKenzie County add up to about 2,474 square miles of land (6,408 sq km) as the Census Bureau draws them. The largest is 58854 (Watford City), with 666 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Grassy Butte, ND 58634.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
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.