4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sheridan | 1 | 20,334 | 18,771 | 1.3% | 1,564 | 13 | City |
| Ranchester | 2 | 1,228 | 1,072 | 2.16% | 1,732 | 1 | Town |
| Dayton | 3 | 835 | 817 | 0.36% | 1,524 | 1 | Town |
| Clearmont | 4 | 128 | 115 | 1.59% | 766 | 0 | Town |
Sheridan is the largest city in Sheridan County, with a population of 20,334.
Clearmont is the smallest city in Sheridan County, with a population of 128.
There are 4 cities in Sheridan County, Wyoming.