25 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 58104 | Fargo | 49,168 |
| 58103 | Fargo | 48,796 |
| 58078 | West Fargo | 40,631 |
| 58102 | Fargo | 32,912 |
| 58047 | Horace | 5,636 |
| 58012 | Casselton | 3,049 |
| 58105 | Fargo | 2,825 |
| 58051 | Kindred | 1,980 |
| 58059 | Mapleton | 1,670 |
| 58042 | Harwood | 1,344 |
| 58005 | Argusville | 898 |
| 58021 | Davenport | 584 |
| 58006 | Arthur | 573 |
| 58052 | Leonard | 529 |
| 58048 | Hunter | 505 |
| 58079 | Wheatland | 504 |
| 58071 | Tower City | 486 |
| 58011 | Buffalo | 449 |
| 58036 | Gardner | 360 |
| 58064 | Page | 332 |
| 58031 | Fingal | 301 |
| 58004 | Amenia | 241 |
| 58029 | Erie | 88 |
| 58007 | Ayr | 81 |
| 58002 | Absaraka | 17 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 25 ZCTAs in Cass County, North Dakota (US Census).