14 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Libby | 1 | 3,421 | 2,791 | 3.82% | 1,857 | 1.84 | City |
| Eureka | 2 | 1,629 | 1,388 | 3.04% | 1,229 | 1.33 | Town |
| Troy | 3 | 965 | 800 | 3.54% | 1,141 | 0.85 | City |
| Trego | 4 | 822 | 855 | 2.24% | 15 | 53.90 | CDP |
| White Haven | 5 | 729 | 614 | 1.39% | 736 | 0.99 | CDP |
| Pioneer Junction | 6 | 627 | 880 | -3.39% | 178 | 3.52 | CDP |
| Fortine | 7 | 459 | 435 | 2% | 65 | 7.09 | CDP |
| Yaak | 8 | 350 | 299 | 1.74% | 13 | 27.85 | CDP |
| Bull Lake | 9 | 256 | 220 | 7.11% | 141 | 1.81 | CDP |
| West Kootenai | 10 | 145 | 84 | -9.38% | 9 | 16.07 | CDP |
| Sylvanite | 11 | 114 | 85 | 0% | 20 | 5.71 | CDP |
| Rexford | 12 | 91 | 78 | 3.41% | 1,071 | 0.09 | Town |
| Happys Inn | 13 | 56 | 83 | -12.5% | 6 | 9.81 | CDP |
| Stryker | 14 | 26 | 22 | 8.33% | 25 | 1.03 | CDP |
Libby is the largest city in Lincoln County, with a population of 3,421.
Stryker is the smallest city in Lincoln County.
There are 14 cities in Lincoln County, Montana.