17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center township | 1 | 2,787 | 2,744 | 0.58% | 52 | 53.81 | Township |
| Fowler | 2 | 2,357 | 2,337 | 0.17% | 1,669 | 1.41 | Town |
| Oak Grove township | 3 | 1,595 | 1,569 | 0.76% | 45 | 35.51 | Township |
| Bolivar township | 4 | 1,177 | 1,156 | 0.77% | 33 | 36.10 | Township |
| Oxford | 5 | 1,167 | 1,162 | 0.09% | 2,130 | 0.55 | Town |
| Otterbein | 6 | 1,121 | 1,143 | -0.36% | 874 | 1.28 | Town |
| Grant township | 7 | 1,087 | 1,077 | 0.56% | 30 | 35.93 | Township |
| Boswell | 8 | 800 | 802 | 0% | 905 | 0.88 | Town |
| Hickory Grove township | 9 | 415 | 410 | 0.73% | 14 | 28.90 | Township |
| Earl Park | 10 | 363 | 363 | 0% | 393 | 0.92 | Town |
| Pine township | 11 | 339 | 337 | 0.59% | 10 | 35.66 | Township |
| Gilboa township | 12 | 269 | 270 | 0% | 7 | 35.94 | Township |
| Union township | 13 | 240 | 235 | 0.84% | 7 | 35.76 | Township |
| Ambia | 14 | 227 | 231 | -0.44% | 1,503 | 0.15 | Town |
| Raub | 15 | 210 | 80 | 7.14% | 2,414 | 0.09 | CDP |
| Parish Grove township | 16 | 202 | 197 | 1% | 4 | 45.42 | Township |
| York township | 17 | 173 | 166 | 1.17% | 6 | 27.49 | Township |
Center township is the largest city in Benton County, with a population of 2,787.
York township is the smallest city in Benton County.
There are 17 cities in Benton County, Indiana.