County ZIP codes · Montana · FIPS 30105
Valley County, MT ZIP Codes
Valley County, Montana has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 10 of the residential ones lie mainly in Valley County and 3 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $53,311 in 59201 (Wolf Point) to $89,821 in 59248 (Nashua) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Valley County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
They carry 13 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 13 residential ZIP codes in Valley County
10 ZIP codes lie mainly in Valley County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 59230 | Glasgow | 4,606 | 3 | $85k | $241k | 100% |
| 59248 | Nashua | 1,023 | 2 | $90k | $216k | 100% |
| 59225 | Frazer | 639 | 2 | $44k | $114k | 100% |
| 59241 | Hinsdale | 439 | 0 | $49k | $109k | 100% |
| 59231 | Saint Marie | 306 | 551 | $39k | $19k | 100% |
| 59250 | Opheim | 242 | 1 | $51k | $49k | 100% |
| 59260 | Richland | 76 | 0 | $85k | $315k | 61% |
| 59244 | Larslan | 63 | 0 | $111k | $225k | 100% |
| 59240 | Glentana | 22 | 1 | $59k | – | 100% |
| 59273 | Vandalia | 15 | 0 | – | – | 100% |
Partly in Valley County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
4 ZIP codes of Valley County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Valley | Elsewhere |
|---|---|---|
| 59201 | 8% | Roosevelt County 54%; McCone County 38% |
| 59261 | 21% | Phillips County 79% |
| 59260 | 61% | Daniels County 39% |
| 59253 | 2% | Daniels County 98% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Valley County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Valley County starts with 592.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 592 | Billings, MT (SCF 590) | 13 | 41 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.