ZIP CodesZIP codes in Valley County, Montana
Valley County, Montana has 11 ZIP codes in this list, from 59223 to 59273. They cover 11 places, among them Fort Peck, Frazer, Glasgow and Saint Marie.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 59223 | Fort Peck | 301 | 48.009, -106.449 |
| 59225 | Frazer | 327 | 48.296, -106.032 |
| 59230 | Glasgow | 1,497 | 48.203, -106.609 |
| 59231 | Saint Marie | 0.6 | 48.404, -106.543 |
| 59240 | Glentana | 37.6 | 48.848, -106.249 |
| 59241 | Hinsdale | 1,219 | 48.401, -107.010 |
| 59244 | Larslan | 234 | 48.582, -106.284 |
| 59248 | Nashua | 578 | 48.132, -106.356 |
| 59250 | Opheim | 467 | 48.870, -106.366 |
| 59260 | Richland | 396 | 48.651, -106.119 |
| 59273 | Vandalia | 50.5 | 48.355, -106.910 |
The ZIP code areas of Valley County add up to about 5,108 square miles of land (13,230 sq km) as the Census Bureau draws them. The largest is 59230 (Glasgow), with 1,497 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Fort Peck, MT 59223.
- 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.