10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Stuttgart | 1 | 7,487 | 8,261 | -1.98% | 1,010 | 7 | City |
| Stuttgart | 2 | 7,487 | 8,239 | -1.98% | 1,010 | 7 | City |
| DeWitt | 3 | 2,794 | 3,050 | -1.76% | 934 | 3 | City |
| DeWitt | 4 | 2,794 | 3,041 | -1.76% | 934 | 3 | City |
| Gillett | 5 | 620 | 565 | 1.64% | 622 | 1 | City |
| Gillett | 6 | 620 | 568 | 1.64% | 622 | 1 | City |
| Almyra | 7 | 240 | 258 | -1.64% | 619 | 0 | Town |
| Almyra | 8 | 240 | 257 | -1.64% | 619 | 0 | Town |
| St. Charles | 9 | 187 | 205 | -2.09% | 211 | 1 | Town |
| St. Charles | 10 | 187 | 204 | -2.09% | 211 | 1 | Town |
Stuttgart is the largest city in Arkansas County, with a population of 7,487.
St. Charles is the smallest city in Arkansas County, with a population of 187.
There are 10 cities in Arkansas County, Arkansas.