9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Greenville | 1 | 26,411 | 29,493 | -2.28% | 982 | 26.89 | City |
| Leland | 2 | 3,515 | 3,959 | -2.47% | 981 | 3.58 | City |
| Hollandale | 3 | 2,058 | 2,317 | -2.46% | 929 | 2.22 | City |
| Metcalfe | 4 | 725 | 812 | -2.29% | 723 | 1 | Town |
| Elizabeth | 5 | 324 | 275 | 7.29% | 1,022 | 0.32 | CDP |
| Glen Allan | 6 | 292 | 148 | 6.96% | 64 | 4.54 | CDP |
| Arcola | 7 | 275 | 305 | -2.14% | 1,256 | 0.22 | Town |
| Winterville | 8 | 131 | 52 | 7.38% | 51 | 2.56 | CDP |
| Stoneville | 9 | 30 | 44 | 7.14% | 16 | 1.91 | CDP |
Greenville is the largest city in Washington County, with a population of 26,411.
Stoneville is the smallest city in Washington County.
There are 9 cities in Washington County, Mississippi.