8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Prattville | 1 | 40,714 | 37,731 | 1.43% | 1,140 | 36 | City |
| Prattville | 2 | 40,714 | 37,839 | 1.43% | 1,140 | 36 | City |
| Holtville | 3 | 5,209 | 4,476 | 1.46% | 241 | 22 | CDP |
| Marbury | 4 | 2,303 | 2,040 | 2.63% | 99 | 23 | CDP |
| Autaugaville | 5 | 822 | 786 | 0.86% | 105 | 8 | Town |
| Autaugaville | 6 | 822 | 787 | 0.86% | 105 | 8 | Town |
| Billingsley | 7 | 127 | 129 | -0.78% | 108 | 1 | Town |
| Billingsley | 8 | 127 | 129 | -0.78% | 108 | 1 | Town |
Prattville is the largest city in Autauga County, with a population of 40,714.
Billingsley is the smallest city in Autauga County, with a population of 127.
There are 8 cities in Autauga County, Alabama.