5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Greenville | 1 | 25,770 | 29,504 | -2.36% | 958 | 27 | City |
| Leland | 2 | 3,458 | 3,964 | -2.37% | 965 | 4 | City |
| Hollandale | 3 | 2,026 | 2,317 | -2.31% | 914 | 2 | City |
| Metcalfe | 4 | 712 | 813 | -2.33% | 710 | 1 | Town |
| Arcola | 5 | 271 | 304 | -1.81% | 1,237 | 0 | Town |
Greenville is the largest city in Washington County, with a population of 25,770.
Arcola is the smallest city in Washington County, with a population of 271.
There are 5 cities in Washington County, Mississippi.