17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center | 1 | 2,828 | 2,746 | 1% | 53 | 54 | Township |
| Fowler | 2 | 2,396 | 2,339 | 0.46% | 1,697 | 1 | Town |
| Oak Grove | 3 | 1,610 | 1,567 | 1.07% | 45 | 36 | Township |
| Bolivar | 4 | 1,193 | 1,155 | 1.27% | 33 | 36 | Township |
| Oxford | 5 | 1,187 | 1,162 | 0.42% | 2,166 | 1 | Town |
| Otterbein | 6 | 1,141 | 1,141 | 0% | 889 | 1 | Town |
| Grant | 7 | 1,102 | 1,077 | 1.01% | 31 | 36 | Township |
| Boswell | 8 | 813 | 801 | 0.25% | 920 | 1 | Town |
| Hickory Grove | 9 | 419 | 406 | 1.45% | 14 | 29 | Township |
| Earl Park | 10 | 365 | 359 | 0.27% | 395 | 1 | Town |
| Pine | 11 | 345 | 337 | 1.17% | 10 | 36 | Township |
| Gilboa | 12 | 277 | 271 | 1.09% | 8 | 36 | Township |
| Union | 13 | 236 | 234 | 0% | 7 | 36 | Township |
| Ambia | 14 | 235 | 229 | 0.43% | 1,556 | 0 | Town |
| Raub | 15 | 210 | 80 | 7.14% | 2,414 | 0 | CDP |
| Parish Grove | 16 | 199 | 197 | 0% | 4 | 45 | Township |
| York | 17 | 172 | 166 | 1.18% | 6 | 27 | Township |
Center is the largest city in Benton County, with a population of 2,828.
York is the smallest city in Benton County, with a population of 172.
There are 17 cities in Benton County, Indiana.