| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jasper | 1 | 512 | 531 | -0.78% | 537 | 1 | City |
| Western Grove | 2 | 344 | 355 | -0.58% | 319 | 1 | Town |
Jasper is the largest city in Newton County, with a population of 512.
Western Grove is the smallest city in Newton County, with a population of 344.
There are 2 cities in Newton County, Arkansas.