12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Piggott | 1 | 3,480 | 3,625 | -0.83% | 645 | 5.40 | City |
| Corning | 2 | 3,052 | 3,217 | -1.07% | 831 | 3.67 | City |
| Rector | 3 | 1,805 | 1,852 | -0.5% | 1,324 | 1.36 | City |
| St. Francis | 4 | 205 | 214 | -0.97% | 577 | 0.35 | City |
| Pollard | 5 | 185 | 195 | -1.07% | 623 | 0.30 | City |
| Greenway | 6 | 169 | 174 | -0.59% | 650 | 0.26 | City |
| Knobel | 7 | 142 | 146 | -0.7% | 337 | 0.42 | City |
| McDougal | 8 | 127 | 134 | -0.78% | 342 | 0.37 | Town |
| Peach Orchard | 9 | 103 | 105 | 0% | 100 | 1.03 | City |
| Success | 10 | 93 | 98 | -1.06% | 417 | 0.22 | Town |
| Datto | 11 | 62 | 66 | -1.59% | 100 | 0.62 | Town |
| Nimmons | 12 | 62 | 66 | -1.59% | 248 | 0.25 | Town |
Piggott is the largest city in Clay County, with a population of 3,480.
Nimmons is the smallest city in Clay County.
There are 12 cities in Clay County, Arkansas.