Cass County, North Dakota ZIP codes
34 ZIP codes are in Cass County, plus 5 that cross in from neighboring counties. It's part of the Fargo, ND-MN metro area.
- ZIP codes
- 34
- Population in these ZIPs
- 193,959
- Avg. median income
- $79,100population-weighted
- Cities & towns
- 22
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Cass County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 58002 | Absaraka | 17 | — | — |
| 58004 | Amenia | 241 | $72,250 | $208,300 |
| 58005 | Argusville | 898 | $142,917 | $448,700 |
| 58006 | Arthur | 573 | $95,313 | $260,900 |
| 58007 | Ayr | 81 | $81,250 | $168,800 |
| 58011 | Buffalo | 449 | $99,853 | $271,100 |
| 58012 | Casselton | 3,049 | $75,000 | $337,200 |
| 58021 | Davenport | 584 | $108,750 | $341,300 |
| 58029 | Erie | 88 | $145,625 | $400,000 |
| 58031 | Fingal | 301 | $57,438 | $70,800 |
| 58036 | Gardner | 360 | $100,625 | $292,200 |
| 58042 | Harwood | 1,344 | $137,500 | $405,500 |
| 58047 | Horace | 5,636 | $142,361 | $432,700 |
| 58048 | Hunter | 505 | $100,227 | $207,800 |
| 58051 | Kindred | 1,980 | $107,396 | $422,000 |
| 58052 | Leonard | 529 | $87,813 | $283,000 |
| 58059 | Mapleton | 1,670 | $115,469 | $347,000 |
| 58064 | Page | 332 | $75,625 | $283,100 |
| 58071 | Tower City | 486 | $109,375 | $194,300 |
| 58078 | West Fargo | 40,631 | $91,040 | $365,000 |
| 58079 | Wheatland | 504 | $126,477 | $350,000 |
| 58102 | Fargo | 32,912 | $59,533 | $272,200 |
| 58103 | Fargo | 48,796 | $58,801 | $267,900 |
| 58104 | Fargo | 49,168 | $85,747 | $406,800 |
| 58105 | Fargo | 2,825 | $123,636 | — |
| 58106 PO Box | Fargo | — | — | — |
| 58107 PO Box | Fargo | — | — | — |
| 58108 PO Box | Fargo | — | — | — |
| 58109 PO Box | Fargo | — | — | — |
| 58121 PO Box | Fargo | — | — | — |
| 58122 PO Box | Fargo | — | — | — |
| 58124 PO Box | Fargo | — | — | — |
| 58125 PO Box | Fargo | — | — | — |
| 58126 PO Box | Fargo | — | — | — |
ZIP codes partly in Cass County
These ZIP codes are mostly in a neighboring county but cover part of Cass County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 58027 | Enderlin | Ransom County | 1,530 | $75,774 | $180,600 |
| 58035 | Galesburg | Traill County | 212 | $131,471 | $288,600 |
| 58038 | Grandin | Traill County | 179 | $112,750 | $210,000 |
| 58046 | Hope | Steele County | 645 | $65,625 | $143,800 |
| 58068 | Sheldon | Ransom County | 134 | $60,833 | $102,800 |
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 Cass County
Nearby counties
Frequently asked questions
How many ZIP codes are in Cass County, North Dakota?
34 ZIP codes are mainly in Cass County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Cass County?
ZIP codes in Cass County use the city names Absaraka, Amenia, Argusville, Arthur, Ayr, Buffalo, Casselton, Davenport, Erie, Fargo, Fingal and Gardner and others.
What metro area is Cass County in?
Cass County is part of the Fargo, ND-MN metropolitan statistical area.