4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sheridan | 1 | 20,073 | 18,771 | 1.31% | 1,544 | 13 | City |
| Ranchester | 2 | 1,202 | 1,072 | 2.21% | 1,695 | 1 | Town |
| Dayton | 3 | 832 | 817 | 0.36% | 1,518 | 1 | Town |
| Clearmont | 4 | 126 | 115 | 1.61% | 754 | 0 | Town |
Sheridan is the largest city in Sheridan County, with a population of 20,073.
Clearmont is the smallest city in Sheridan County, with a population of 126.
There are 4 cities in Sheridan County, Wyoming.