| Post Office | Fargo |
| Division | Cass |
| Pincode | 58103 |
| Post Office | Fargo |
| Division | Cass |
| Pincode | 58104 |
| Post Office | West Fargo |
| Division | Cass |
| Pincode | 58078 |
| Post Office | Fargo |
| Division | Cass |
| Pincode | 58102 |
| Post Office | Horace |
| Division | Cass |
| Pincode | 58047 |
| Post Office | Casselton |
| Division | Cass |
| Pincode | 58012 |