8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Warsaw | 1 | 2,402 | 2,216 | 1.56% | 963 | 2.49 | City |
| Lincoln | 2 | 1,238 | 1,143 | 1.56% | 1,305 | 0.95 | City |
| Cole Camp | 3 | 1,209 | 1,103 | 1.77% | 929 | 1.30 | City |
| Bent Tree Harbor | 4 | 381 | 220 | 7.02% | 184 | 2.08 | CDP |
| White Branch | 5 | 308 | 225 | 7.32% | 620 | 0.50 | CDP |
| Ionia | 6 | 80 | 74 | 1.27% | 541 | 0.15 | Town |
| Tightwad | 7 | 60 | 59 | 0% | 60 | 1 | Village |
| Gerster | 8 | 16 | 15 | 0% | 198 | 0.08 | Town |
Warsaw is the largest city in Benton County, with a population of 2,402.
Gerster is the smallest city in Benton County.
There are 8 cities in Benton County, Missouri.