| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Harlowton | 1 | 973 | 962 | -0.31% | 1,554 | 1 | City |
| Judith Gap | 2 | 110 | 109 | -0.9% | 331 | 0 | City |
Harlowton is the largest city in Wheatland County, with a population of 973.
Judith Gap is the smallest city in Wheatland County, with a population of 110.
There are 2 cities in Wheatland County, Montana.