5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sullivan | 1 | 4,246 | 4,401 | -0.61% | 1,533 | 3 | City |
| Bethany | 2 | 1,172 | 1,250 | -1.1% | 1,200 | 1 | Village |
| Lovington | 3 | 999 | 1,062 | -0.99% | 1,836 | 1 | Village |
| Dalton City | 4 | 426 | 456 | -1.16% | 798 | 1 | Village |
| Gays | 5 | 206 | 221 | -0.96% | 534 | 0 | Village |
Sullivan is the largest city in Moultrie County, with a population of 4,246.
Gays is the smallest city in Moultrie County, with a population of 206.
There are 5 cities in Moultrie County, Illinois.