| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ava | 1 | 3,300 | 2,908 | 2.14% | 993 | 3 | City |
Ava is the largest city in Douglas County, with a population of 3,300.
Ava is the smallest city in Douglas County, with a population of 3,300.
There is 1 city in Douglas County, Missouri.