County ZIP codes · Montana · FIPS 30063
Missoula County, MT ZIP Codes
Missoula County, Montana has 19 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 17 residential and 2 for PO boxes or a single organization. 14 of the residential ones lie mainly in Missoula County and 3 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $51,490 in 59868 (Seeley Lake) to $111,925 in 59803 (Missoula) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Missoula County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $67,736 and $86,620.
They carry 12 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 17 residential ZIP codes in Missoula County
14 ZIP codes lie mainly in Missoula County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 59801 | Missoula | 30,916 | 4,009 | $58k | $442k | 100% |
| 59808 | Missoula | 23,574 | 150 | $80k | $461k | 100% |
| 59802 | Missoula | 19,864 | 438 | $68k | $462k | 100% |
| 59803 | Missoula | 18,401 | 190 | $112k | $556k | 100% |
| 59804 | Missoula | 8,123 | 64 | $76k | $588k | 100% |
| 59847 | Lolo | 6,015 | 20 | $87k | $450k | 95% |
| 59821 | Arlee | 2,994 | 9 | $67k | $375k | 44% |
| 59834 | Frenchtown | 2,444 | 36 | $94k | $450k | 100% |
| 59823 | Bonner | 1,931 | 4 | $83k | $474k | 100% |
| 59868 | Seeley Lake | 1,797 | 7 | $52k | $392k | 96% |
| 59846 | Huson | 1,377 | 7 | $71k | $461k | 100% |
| 59812 | Missoula | 1,181 | 5,493 | – | – | 100% |
| 59826 | Condon | 518 | 1 | $53k | $508k | 100% |
| 59851 | Milltown | 145 | 411 | $19k | $225k | 100% |
Partly in Missoula 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?
6 ZIP codes of Missoula County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Missoula | Elsewhere |
|---|---|---|
| 59833 | 30% | Ravalli County 70% |
| 59847 | 95% | Idaho County 5% |
| 59821 | 44% | Lake County 37%; Sanders County 19% |
| 59825 | 38% | Granite County 62% |
| 59820 | 28% | Mineral County 72% |
| 59868 | 96% | Powell County 4% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Missoula 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 Missoula County starts with 598.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 598 | Missoula, MT (SCF 598) | 19 | 53 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.