14 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 |
| Lincoln township | 4 | 594 | 594 | -0.34% | 12 | 48.48 | Township |
| Lincoln township | 5 | 405 | 391 | 0.5% | 11 | 36.26 | Township |
| Bent Tree Harbor | 6 | 381 | 220 | 7.02% | 184 | 2.08 | CDP |
| White Branch | 7 | 308 | 225 | 7.32% | 620 | 0.50 | CDP |
| Lincoln township | 8 | 286 | 315 | -2.39% | 4 | 65.95 | Township |
| Lincoln township | 9 | 263 | 274 | -1.13% | 5 | 48.02 | Township |
| Lincoln township | 10 | 121 | 120 | 0% | 3 | 42 | Township |
| Lincoln township | 11 | 106 | 103 | 0.95% | 3 | 35.92 | Township |
| Ionia | 12 | 80 | 74 | 1.27% | 541 | 0.15 | Town |
| Tightwad | 13 | 60 | 59 | 0% | 60 | 1 | Village |
| Gerster | 14 | 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 14 cities in Benton County, Missouri.