8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Arkadelphia | 1 | 9,777 | 10,359 | -1.18% | 1,265 | 8 | City |
| Gurdon | 2 | 1,820 | 1,840 | -0.22% | 751 | 2 | City |
| Amity | 3 | 677 | 675 | 0% | 211 | 3 | City |
| Caddo Valley | 4 | 589 | 592 | -0.17% | 190 | 3 | Town |
| Okolona | 5 | 100 | 97 | 0% | 126 | 1 | Town |
| Gum Springs | 6 | 91 | 91 | 0% | 233 | 0 | Town |
| Alpine | 7 | 89 | 129 | 7.23% | 62 | 1 | CDP |
| Whelen Springs | 8 | 43 | 45 | -2.27% | 184 | 0 | Town |
Arkadelphia is the largest city in Clark County, with a population of 9,777.
Whelen Springs is the smallest city in Clark County, with a population of 43.
There are 8 cities in Clark County, Arkansas.