| Rank | City | 2006 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Billings | 98,656 | 1.4% |
| 2 | Missoula | 64,232 | 2.2% |
| 3 | Great Falls | 58,280 | 0.4% |
| 4 | Bozeman | 34,698 | 4.3% |
| 5 | Butte-Silver Bow | 32,047 | -1.1% |
| 6 | Helena | 27,663 | 1.0% |
| 7 | Kalispell | 18,422 | 3.9% |
| 8 | Havre | 9,355 | -0.5% |
| 9 | Anaconda-Deer Lodge County | 8,991 | -0.9% |
| 10 | Miles City | 8,083 | -0.9% |
| 11 | Belgrade | 7,329 | 4.3% |
| 12 | Livingston | 7,121 | 0.2% |
| 13 | Whitefish | 7,114 | 4.2% |
| 14 | Laurel | 6,356 | 0.2% |
| 15 | Lewistown | 5,946 | -1.1% |
| 16 | Polson | 4,822 | 2.8% |
| 17 | Sidney | 4,706 | -1.4% |
| 18 | Columbia Falls | 4,651 | 3.5% |
| 19 | Glendive | 4,590 | -1.2% |
| 20 | Hamilton | 4,517 | 3.0% |
| 21 | Dillon | 4,059 | -1.0% |
| 22 | Hardin | 3,435 | 0.2% |
| 23 | Shelby | 3,420 | 1.2% |
| 24 | Deer Lodge | 3,349 | -0.4% |
| 25 | Cut Bank | 3,123 | 0.2% |
| 26 | Glasgow | 2,971 | -1.7% |
| 27 | Libby | 2,833 | -0.4% |
| 28 | Wolf Point | 2,591 | -0.6% |
| 29 | Conrad | 2,554 | -1.3% |
| 30 | Red Lodge | 2,364 | 1.6% |
| 31 | Colstrip | 2,316 | -0.3% |
| 32 | Three Forks | 1,949 | 1.9% |
| 33 | Ronan | 1,944 | 1.3% |
| 34 | Townsend | 1,914 | 0.5% |
| 35 | Columbus | 1,897 | 1.0% |
| 36 | Stevensville | 1,875 | 2.9% |
| 37 | Roundup | 1,863 | -0.7% |
| 38 | Malta | 1,855 | -2.4% |
| 39 | Forsyth | 1,849 | -0.7% |
| 40 | East Helena | 1,842 | 2.1% |
| 41 | Plentywood | 1,748 | -3.1% |
| 42 | Big Timber | 1,707 | 0.4% |
| 43 | Choteau | 1,704 | -0.9% |
| 44 | Baker | 1,578 | -1.3% |
| 45 | Manhattan | 1,572 | 1.5% |
| 46 | Fort Benton | 1,434 | -2.1% |
| 47 | Boulder | 1,393 | 1.3% |
| 48 | Thompson Falls | 1,384 | 0.9% |
| 49 | Chinook | 1,294 | -1.3% |
| 50 | West Yellowstone | 1,264 | 1.4% |
| 51 | Plains | 1,211 | 1.4% |
| 52 | Whitehall | 1,117 | 1.3% |
| 53 | Browning | 1,068 | 0.1% |
| 54 | Eureka | 1,001 | -0.3% |
| 55 | White Sulphur Springs | 972 | -0.2% |
| 56 | Ennis | 966 | 2.3% |
| 57 | Scobey | 955 | -2.4% |
| 58 | Troy | 952 | -0.2% |
| 59 | Harlowton | 940 | -2.4% |
| 60 | Philipsburg | 936 | 0.4% |
| 61 | Poplar | 894 | -0.4% |
| 62 | Superior | 893 | – |
| 63 | Darby | 821 | 2.8% |
| 64 | Cascade | 819 | 0.2% |
| 65 | St. Ignatius | 811 | 0.5% |
| 66 | Pinesdale | 804 | 1.5% |
| 67 | Harlem | 804 | -1.0% |
| 68 | Chester | 788 | -1.9% |
| 69 | Bridger | 741 | -0.1% |
| 70 | Culbertson | 706 | -0.3% |
| 71 | Walkerville | 690 | -0.6% |
| 72 | Sheridan | 672 | 0.3% |
| 73 | Fairfield | 661 | -1.1% |
| 74 | Fairview | 661 | -1.3% |
| 75 | Belt | 627 | -0.0% |
| 76 | Big Sandy | 625 | -2.3% |
| 77 | Joliet | 592 | 0.6% |
| 78 | Hot Springs | 564 | 0.6% |
| 79 | Circle | 563 | -2.5% |
| 80 | Terry | 550 | -1.9% |
| 81 | Lodge Grass | 530 | -0.0% |
| 82 | Wibaux | 488 | -3.0% |
| 83 | Fromberg | 487 | 0.0% |
| 84 | Valier | 463 | -1.3% |
| 85 | Broadus | 462 | -1.7% |
| 86 | Stanford | 415 | -1.8% |
| 87 | Alberton | 415 | 1.9% |
| 88 | Twin Bridges | 408 | 0.3% |
| 89 | Ekalaka | 380 | -1.3% |
| 90 | Sunburst | 368 | -2.3% |
| 91 | Dutton | 365 | -1.2% |
| 92 | Clyde Park | 344 | 2.0% |
| 93 | Jordan | 333 | -1.6% |
| 94 | Drummond | 324 | 0.3% |
| 95 | Nashua | 299 | -1.6% |
| 96 | Ryegate | 290 | 2.1% |
| 97 | Denton | 280 | -1.4% |
| 98 | Hysham | 266 | -4.0% |
| 99 | Geraldine | 251 | -2.4% |
| 100 | Brockton | 246 | -0.4% |
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