There are 20 cities in Big Horn County, Montana.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Billings | 1 | Montana | 122,715 | 117,205 | 1.14% | 2,693 | 45.57 |
| Sheridan | 2 | Wyoming | 19,701 | 18,769 | 1.2% | 1,553 | 12.68 |
| Lockwood | 3 | Montana | 7,855 | 8,206 | 3.03% | 611 | 12.86 |
| Hardin | 4 | Montana | 3,670 | 3,806 | -0.92% | 1,234 | 2.97 |
| Crow Agency | 5 | Montana | 1,958 | 1,972 | -0.15% | 267 | 7.34 |
| Lame Deer | 6 | Montana | 1,840 | 2,288 | -5.74% | 33 | 55.59 |
| Powder Horn | 7 | Wyoming | 1,067 | 953 | 2.79% | 557 | 1.92 |
| Muddy | 8 | Montana | 718 | 604 | 4.21% | 25 | 28.63 |
| Pryor | 9 | Montana | 679 | 579 | 3.82% | 17 | 39.80 |
| Busby | 10 | Montana | 430 | 586 | -4.87% | 30 | 14.32 |
| Lodge Grass | 11 | Montana | 422 | 438 | -0.94% | 1,636 | 0.26 |
| Wyola | 12 | Montana | 325 | 199 | 10.92% | 48 | 6.73 |
| Hysham | 13 | Montana | 272 | 274 | 0% | 1,242 | 0.22 |
| Huntley | 14 | Montana | 238 | 522 | -22.98% | 157 | 1.52 |
| Custer | 15 | Montana | 141 | 151 | -1.4% | 448 | 0.32 |
| Birney | 16 | Montana | 98 | 150 | -11.71% | 6 | 15.09 |
| Fort Smith | 17 | Montana | 70 | 160 | -23.91% | 51 | 1.38 |
| Pompeys Pillar | 18 | Montana | 21 | 86 | -4.54% | 108 | 0.20 |
| St. Xavier | 19 | Montana | 0 | 184 | 0% | 0 | 5.60 |
| Big Horn | 20 | Wyoming | 0 | 382 | 0% | 0 | 1.81 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Billings is the largest city in Big Horn County.
Big Horn is the smallest city in Big Horn County.
There are 20 cities in Big Horn County, Montana.