12 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Piggott | 1 | 3,469 | 3,624 | -0.74% | 643 | 5 | City |
| Corning | 2 | 3,018 | 3,221 | -1.11% | 822 | 4 | City |
| Rector | 3 | 1,762 | 1,848 | -0.79% | 1,293 | 1 | City |
| St. Francis | 4 | 206 | 215 | -0.48% | 580 | 0 | City |
| Pollard | 5 | 181 | 193 | -1.09% | 609 | 0 | City |
| Greenway | 6 | 168 | 174 | -0.59% | 646 | 0 | City |
| Knobel | 7 | 143 | 148 | -0.69% | 340 | 0 | City |
| McDougal | 8 | 125 | 131 | -0.79% | 337 | 0 | Town |
| Peach Orchard | 9 | 102 | 105 | 0% | 99 | 1 | City |
| Success | 10 | 93 | 98 | -1.06% | 417 | 0 | Town |
| Nimmons | 11 | 64 | 67 | 0% | 256 | 0 | Town |
| Datto | 12 | 63 | 66 | 0% | 101 | 1 | Town |
Piggott is the largest city in Clay County, with a population of 3,469.
Datto is the smallest city in Clay County, with a population of 63.
There are 12 cities in Clay County, Arkansas.