| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cabot | 1 | 27,960 | 26,558 | 0.9% | 1,347 | 21 | City |
| Ward | 2 | 7,492 | 6,169 | 3.22% | 1,568 | 5 | City |
| Lonoke | 3 | 4,308 | 4,262 | 0.21% | 896 | 5 | City |
| Austin | 4 | 4,134 | 3,545 | 2.91% | 1,335 | 3 | City |
| England | 5 | 2,399 | 2,465 | -0.42% | 1,270 | 2 | City |
| Carlisle | 6 | 1,966 | 2,044 | -0.81% | 406 | 5 | City |
| Humnoke | 7 | 219 | 223 | -0.45% | 697 | 0 | City |
| Keo | 8 | 202 | 203 | 0% | 41 | 5 | Town |
| Coy | 9 | 89 | 92 | -1.11% | 132 | 1 | Town |
Cabot is the largest city in Lonoke County, with a population of 27,960.
Coy is the smallest city in Lonoke County, with a population of 89.
There are 9 cities in Lonoke County, Arkansas.