16 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center | 1 | 2,856 | 2,746 | 0.99% | 53 | 54 | Township |
| Fowler | 2 | 2,408 | 2,339 | 0.5% | 1,705 | 1 | Town |
| Oak Grove | 3 | 1,627 | 1,567 | 1.06% | 46 | 36 | Township |
| Bolivar | 4 | 1,208 | 1,155 | 1.26% | 33 | 36 | Township |
| Oxford | 5 | 1,192 | 1,162 | 0.42% | 2,175 | 1 | Town |
| Otterbein | 6 | 1,141 | 1,141 | 0% | 889 | 1 | Town |
| Grant | 7 | 1,113 | 1,077 | 1% | 31 | 36 | Township |
| Boswell | 8 | 816 | 801 | 0.37% | 923 | 1 | Town |
| Hickory Grove | 9 | 425 | 406 | 1.43% | 15 | 29 | Township |
| Earl Park | 10 | 366 | 359 | 0.27% | 396 | 1 | Town |
| Pine | 11 | 349 | 337 | 1.16% | 10 | 36 | Township |
| Gilboa | 12 | 280 | 271 | 1.08% | 8 | 36 | Township |
| Union | 13 | 236 | 234 | 0% | 7 | 36 | Township |
| Ambia | 14 | 236 | 229 | 0.43% | 1,563 | 0 | Town |
| Parish Grove | 15 | 199 | 197 | 0% | 4 | 45 | Township |
| York | 16 | 174 | 166 | 1.16% | 6 | 27 | Township |
Center is the largest city in Benton County, with a population of 2,856.
York is the smallest city in Benton County, with a population of 174.
There are 16 cities in Benton County, Indiana.