First three digits · Montana
ZIP Codes Starting with
53 ZIP codes start with 598, sorted at the Missoula, MT (SCF 598) sectional center (USPS labeling list L005, effective October 1, 2026) in Montana: 50 residential ZIP codes across 7 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 598 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 598, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 598 to the Missoula, MT (SCF 598) facility. The last two digits pick the delivery area. By residents, the largest town names among the 598 ZIP codes are Missoula, Hamilton, Stevensville, Polson, Ronan and Florence.
The same facility sorts 2 prefixes, 83 ZIP codes in all: 598, 599.
Where are the 598 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 598
| County | ||||||
|---|---|---|---|---|---|---|
| 59801 | Missoula | Missoula County | 30,916 | 4,009 | $58k | $442k |
| 59802 | Missoula | Missoula County | 19,864 | 438 | $68k | $462k |
| 59803 | Missoula | Missoula County | 18,401 | 190 | $112k | $556k |
| 59804 | Missoula | Missoula County | 8,123 | 64 | $76k | $588k |
| 59806 | Missoula | Missoula County | PO Box or unique | – | – | – |
| 59807 | Missoula | Missoula County | PO Box or unique | – | – | – |
| 59808 | Missoula | Missoula County | 23,574 | 150 | $80k | $461k |
| 59812 | Missoula | Missoula County | 1,181 | 5,493 | – | – |
| 59820 | Alberton | Mineral County | 1,834 | 5 | $69k | $367k |
| 59821 | Arlee | Missoula County | 2,994 | 9 | $67k | $375k |
| 59823 | Bonner | Missoula County | 1,931 | 4 | $83k | $474k |
| 59824 | Charlo | Lake County | 1,526 | 16 | $53k | $318k |
| 59825 | Clinton | Granite County | 2,434 | 6 | $90k | $370k |
| 59826 | Condon | Missoula County | 518 | 1 | $53k | $508k |
| 59827 | Conner | Ravalli County | 371 | 23 | $66k | $447k |
| 59828 | Corvallis | Ravalli County | 5,827 | 35 | $80k | $545k |
| 59829 | Darby | Ravalli County | 2,148 | 2 | $64k | $438k |
| 59830 | De Borgia | Mineral County | 102 | 1 | – | $338k |
| 59831 | Dixon | Sanders County | 544 | 5 | $46k | $198k |
| 59832 | Drummond | Granite County | 962 | 4 | $64k | $320k |
| 59833 | Florence | Ravalli County | 6,316 | 41 | $94k | $552k |
| 59834 | Frenchtown | Missoula County | 2,444 | 36 | $94k | $450k |
| 59835 | Grantsdale | Ravalli County | PO Box or unique | – | – | – |
| 59837 | Hall | Granite County | 639 | 3 | $51k | $332k |
| 59840 | Hamilton | Ravalli County | 15,679 | 29 | $62k | $428k |
| 59841 | Pinesdale | Ravalli County | 833 | 639 | $67k | $230k |
| 59842 | Haugan | Mineral County | 46 | 0 | – | – |
| 59843 | Helmville | Powell County | 251 | 1 | $88k | $297k |
| 59844 | Heron | Sanders County | 712 | 9 | $43k | $441k |
| 59845 | Hot Springs | Sanders County | 1,223 | 3 | $32k | $191k |
| 59846 | Huson | Missoula County | 1,377 | 7 | $71k | $461k |
| 59847 | Lolo | Missoula County | 6,015 | 20 | $87k | $450k |
| 59848 | Lonepine | Sanders County | 81 | 3 | $37k | $463k |
| 59851 | Milltown | Missoula County | 145 | 411 | $19k | $225k |
| 59853 | Noxon | Sanders County | 1,030 | 3 | $60k | $293k |
| 59854 | Ovando | Powell County | 195 | 0 | $74k | $583k |
| 59855 | Pablo | Lake County | 419 | 1,187 | $33k | $161k |
| 59856 | Paradise | Sanders County | 130 | 7 | – | – |
| 59858 | Philipsburg | Granite County | 1,494 | 2 | $57k | $380k |
| 59859 | Plains | Sanders County | 4,360 | 6 | $65k | $429k |
| 59860 | Polson | Lake County | 11,897 | 45 | $62k | $442k |
| 59863 | Ravalli | Lake County | 146 | 19 | $79k | – |
| 59864 | Ronan | Lake County | 7,301 | 39 | $62k | $298k |
| 59865 | Saint Ignatius | Lake County | 3,635 | 22 | $57k | $345k |
| 59866 | Saint Regis | Mineral County | 1,161 | 5 | $74k | $344k |
| 59867 | Saltese | Mineral County | 85 | 4 | – | – |
| 59868 | Seeley Lake | Missoula County | 1,797 | 7 | $52k | $392k |
| 59870 | Stevensville | Ravalli County | 12,506 | 49 | $80k | $516k |
| 59871 | Sula | Ravalli County | 289 | 1 | $32k | $458k |
| 59872 | Superior | Mineral County | 2,501 | 5 | $56k | $397k |
| 59873 | Thompson Falls | Sanders County | 2,920 | 4 | $60k | $306k |
| 59874 | Trout Creek | Sanders County | 2,266 | 6 | $64k | $540k |
| 59875 | Victor | Ravalli County | 3,764 | 29 | $63k | $526k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.