Most populated ZIP codes in Montana
The ZIP codes in Montana with the most residents.
| Rank | ZIP code | City | County | Population | Population |
|---|
| 1 | 59901 | Kalispell, MT | Flathead County | 63,161 | 63,161 |
| 2 | 59102 | Billings, MT | Yellowstone County | 47,977 | 47,977 |
| 3 | 59718 | Bozeman, MT | Gallatin County | 44,585 | 44,585 |
| 4 | 59101 | Billings, MT | Yellowstone County | 42,250 | 42,250 |
| 5 | 59715 | Bozeman, MT | Gallatin County | 39,643 | 39,643 |
| 6 | 59105 | Billings, MT | Yellowstone County | 35,480 | 35,480 |
| 7 | 59701 | Butte, MT | Silver Bow County | 34,232 | 34,232 |
| 8 | 59405 | Great Falls, MT | Cascade County | 33,350 | 33,350 |
| 9 | 59601 | Helena, MT | Lewis and Clark County | 31,728 | 31,728 |
| 10 | 59801 | Missoula, MT | Missoula County | 30,916 | 30,916 |
| 11 | 59602 | Helena, MT | Lewis and Clark County | 30,754 | 30,754 |
| 12 | 59404 | Great Falls, MT | Cascade County | 28,822 | 28,822 |
| 13 | 59714 | Belgrade, MT | Gallatin County | 24,282 | 24,282 |
| 14 | 59808 | Missoula, MT | Missoula County | 23,574 | 23,574 |
| 15 | 59106 | Billings, MT | Yellowstone County | 21,417 | 21,417 |
| 16 | 59802 | Missoula, MT | Missoula County | 19,864 | 19,864 |
| 17 | 59803 | Missoula, MT | Missoula County | 18,401 | 18,401 |
| 18 | 59912 | Columbia Falls, MT | Flathead County | 15,752 | 15,752 |
| 19 | 59840 | Hamilton, MT | Ravalli County | 15,679 | 15,679 |
| 20 | 59937 | Whitefish, MT | Flathead County | 15,114 | 15,114 |
| 21 | 59047 | Livingston, MT | Park County | 14,092 | 14,092 |
| 22 | 59401 | Great Falls, MT | Cascade County | 13,255 | 13,255 |
| 23 | 59870 | Stevensville, MT | Ravalli County | 12,506 | 12,506 |
| 24 | 59044 | Laurel, MT | Yellowstone County | 12,302 | 12,302 |
| 25 | 59501 | Havre, MT | Hill County | 12,243 | 12,243 |
| 26 | 59860 | Polson, MT | Lake County | 11,897 | 11,897 |
| 27 | 59301 | Miles City, MT | Custer County | 11,643 | 11,643 |
| 28 | 59923 | Libby, MT | Lincoln County | 10,450 | 10,450 |
| 29 | 59711 | Anaconda, MT | Deer Lodge County | 9,529 | 9,529 |
| 30 | 59911 | Bigfork, MT | Lake County | 9,493 | 9,493 |
| 31 | 59457 | Lewistown, MT | Fergus County | 9,135 | 9,135 |
| 32 | 59270 | Sidney, MT | Richland County | 8,571 | 8,571 |
| 33 | 59725 | Dillon, MT | Beaverhead County | 8,343 | 8,343 |
| 34 | 59635 | East Helena, MT | Lewis and Clark County | 8,292 | 8,292 |
| 35 | 59330 | Glendive, MT | Dawson County | 8,133 | 8,133 |
| 36 | 59804 | Missoula, MT | Missoula County | 8,123 | 8,123 |
| 37 | 59417 | Browning, MT | Glacier County | 7,470 | 7,470 |
| 38 | 59864 | Ronan, MT | Lake County | 7,301 | 7,301 |
| 39 | 59833 | Florence, MT | Ravalli County | 6,316 | 6,316 |
| 40 | 59847 | Lolo, MT | Missoula County | 6,015 | 6,015 |
| 41 | 59828 | Corvallis, MT | Ravalli County | 5,827 | 5,827 |
| 42 | 59741 | Manhattan, MT | Gallatin County | 5,748 | 5,748 |
| 43 | 59722 | Deer Lodge, MT | Powell County | 5,732 | 5,732 |
| 44 | 59634 | Clancy, MT | Jefferson County | 5,521 | 5,521 |
| 45 | 59752 | Three Forks, MT | Gallatin County | 5,404 | 5,404 |
| 46 | 59201 | Wolf Point, MT | Roosevelt County | 5,073 | 5,073 |
| 47 | 59034 | Hardin, MT | Big Horn County | 5,008 | 5,008 |
| 48 | 59427 | Cut Bank, MT | Glacier County | 5,008 | 5,008 |
| 49 | 59917 | Eureka, MT | Lincoln County | 4,920 | 4,920 |
| 50 | 59072 | Roundup, MT | Musselshell County | 4,690 | 4,690 |
Source: American Community Survey 2020–2024 5-year estimates. Only ZIP codes with a delivery area are ranked. Methodology
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