| City | Rank | Annual Change ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Kalispell | 1 | 4.68% | 33,341 | 25,263 |
| Townsend | 2 | 4.09% | 2,365 | 1,828 |
| Belgrade | 3 | 4.02% | 13,634 | 10,687 |
| Red Lodge | 4 | 3.78% | 2,826 | 2,271 |
| Whitefish | 5 | 3.65% | 9,700 | 7,886 |
| Libby | 6 | 3.27% | 3,381 | 2,796 |
| Roundup | 7 | 3.23% | 2,142 | 1,751 |
| East Helena | 8 | 3.05% | 2,396 | 1,940 |
| Hamilton | 9 | 2.9% | 5,609 | 4,720 |
| Thompson Falls | 10 | 2.59% | 1,583 | 1,365 |
| Eureka | 11 | 2.56% | 1,602 | 1,388 |
| Plains | 12 | 2.54% | 1,293 | 1,115 |
| Ronan | 13 | 2.35% | 2,261 | 1,982 |
| Stevensville | 14 | 2.35% | 2,312 | 2,021 |
| Whitehall | 15 | 2.21% | 1,156 | 1,008 |
| Dillon | 16 | 2.06% | 4,359 | 3,882 |
| Polson | 17 | 2.05% | 5,769 | 5,177 |
| Bozeman | 18 | 1.8% | 59,872 | 53,890 |
| Boulder | 19 | 1.76% | 1,328 | 1,205 |
| Helena | 20 | 1.73% | 35,746 | 32,252 |
| Livingston | 21 | 1.58% | 9,437 | 8,645 |
| Columbia Falls | 22 | 1.34% | 5,830 | 5,396 |
| Missoula | 23 | 1.18% | 79,837 | 74,449 |
| Columbus | 24 | 1.17% | 1,987 | 1,865 |
| Big Timber | 25 | 1.01% | 1,703 | 1,642 |
| Anaconda-Deer Lodge County | 26 | 0.88% | 9,794 | 9,425 |
| Billings | 27 | 0.87% | 122,295 | 117,218 |
| Shelby | 28 | 0.85% | 3,341 | 3,164 |
| Lewistown | 29 | 0.84% | 6,231 | 5,971 |
| Choteau | 30 | 0.82% | 1,840 | 1,737 |
| Conrad | 31 | 0.71% | 2,410 | 2,321 |
| Butte-Silver Bow | 32 | 0.61% | 35,686 | 34,574 |
| Miles City | 33 | 0.21% | 8,468 | 8,340 |
| Laurel | 34 | 0.11% | 7,213 | 7,219 |
| Malta | 35 | -0.11% | 1,844 | 1,849 |
| Great Falls | 36 | -0.15% | 60,117 | 60,453 |
| Deer Lodge | 37 | -0.17% | 3,020 | 3,024 |
| Colstrip | 38 | -0.19% | 2,087 | 2,095 |
| Manhattan | 39 | -0.19% | 2,069 | 2,089 |
| Baker | 40 | -0.23% | 1,772 | 1,792 |
| Havre | 41 | -0.25% | 9,241 | 9,325 |
| Three Forks | 42 | -0.42% | 1,912 | 1,982 |
| Forsyth | 43 | -0.42% | 1,645 | 1,672 |
| Glasgow | 44 | -0.45% | 3,131 | 3,199 |
| Plentywood | 45 | -0.49% | 1,611 | 1,670 |
| Cut Bank | 46 | -0.5% | 2,961 | 3,050 |
| Hardin | 47 | -0.51% | 3,677 | 3,794 |
| Chinook | 48 | -0.52% | 1,149 | 1,179 |
| Glendive | 49 | -0.55% | 4,710 | 4,865 |
| Fort Benton | 50 | -0.71% | 1,406 | 1,454 |
| Sidney | 51 | -1.24% | 6,140 | 6,357 |
| Wolf Point | 52 | -1.46% | 2,494 | 2,672 |
| West Yellowstone | 53 | -1.6% | 1,172 | 1,278 |
Montana's cities with over 1,000 residents show varied growth patterns from 2020 to 2025. Kalispell leads with 4.68% annualized growth, followed by Townsend (4.09%) and Belgrade (4.02%). The largest population centers are Billings (122,295), Missoula (79,837), and Great Falls (60,117). Of the 53 cities over 1,000 population, 34 are growing while 19 experienced population decline. Overall, cities averaged 1.11% annualized growth, with total urban population growing by 7.27% annually.