McKenzie County, North Dakota ZIP codes
6 ZIP codes are in McKenzie County, plus 6 that cross in from neighboring counties.
- ZIP codes
- 6
- Population in these ZIPs
- 12,159
- Avg. median income
- $102,500population-weighted
- Cities & towns
- 6
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ZIP codes in McKenzie County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 58634 | Grassy Butte | 402 | $157,750 | — |
| 58831 | Alexander | 1,089 | $98,380 | $343,300 |
| 58835 | Arnegard | 839 | $137,500 | $359,200 |
| 58838 | Cartwright | 252 | $59,392 | $173,400 |
| 58847 | Keene | 209 | $84,950 | $102,800 |
| 58854 | Watford City | 9,368 | $99,000 | $387,000 |
ZIP codes partly in McKenzie County
These ZIP codes are mostly in a neighboring county but cover part of McKenzie County.
| ZIP code | City | State | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|---|
| 58621 | Beach | ND | Golden Valley County | 1,161 | $67,000 | $124,800 |
| 58640 | Killdeer | ND | Dunn County | 1,369 | $100,688 | $282,400 |
| 58757 | Mandaree | ND | Dunn County | 986 | $81,500 | $200,000 |
| 58763 | New Town | ND | Mountrail County | 4,426 | $58,110 | $226,500 |
| 59221 | Fairview | MT | Richland County | 1,951 | $77,115 | $273,700 |
| 59270 | Sidney | MT | Richland County | 8,571 | $72,630 | $278,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in McKenzie County
Nearby counties
Frequently asked questions
How many ZIP codes are in McKenzie County, North Dakota?
6 ZIP codes are mainly in McKenzie County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in McKenzie County?
ZIP codes in McKenzie County use the city names Alexander, Arnegard, Cartwright, Grassy Butte, Keene and Watford City.