| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Audubon | 1 | 1,973 | 2,060 | -0.8% | 1,020 | 2 | City |
| Exira | 2 | 762 | 792 | -0.65% | 803 | 1 | City |
| Kimballton | 3 | 274 | 290 | -1.08% | 360 | 1 | City |
| Brayton | 4 | 134 | 143 | -1.47% | 308 | 0 | City |
| Gray | 5 | 59 | 59 | 0% | 59 | 1 | City |
Audubon is the largest city in Audubon County, with a population of 1,973.
Gray is the smallest city in Audubon County, with a population of 59.
There are 5 cities in Audubon County, Iowa.