8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pine Bluff | 1 | 37,690 | 40,974 | -1.43% | 853 | 44 | City |
| White Hall | 2 | 5,457 | 5,583 | -0.38% | 773 | 7 | City |
| Redfield | 3 | 1,496 | 1,499 | 0% | 484 | 3 | City |
| Altheimer | 4 | 628 | 697 | -1.72% | 306 | 2 | City |
| Humphrey | 5 | 429 | 464 | -1.38% | 328 | 1 | City |
| Wabbaseka | 6 | 166 | 184 | -1.78% | 483 | 0 | Town |
| Allport | 7 | 88 | 90 | 0% | 423 | 0 | Town |
| Sherrill | 8 | 49 | 55 | -2% | 371 | 0 | Town |
Pine Bluff is the largest city in Jefferson County, with a population of 37,690.
Sherrill is the smallest city in Jefferson County, with a population of 49.
There are 8 cities in Jefferson County, Arkansas.