15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Monett | 1 | 10,258 | 9,613 | 1.27% | 1,167 | 8.79 | City |
| Cassville | 2 | 3,256 | 3,190 | 0.4% | 951 | 3.42 | City |
| Shell Knob | 3 | 1,424 | 1,306 | 0.21% | 150 | 9.48 | CDP |
| Purdy | 4 | 1,060 | 1,032 | 0.57% | 1,643 | 0.65 | City |
| Seligman | 5 | 928 | 810 | 2.65% | 744 | 1.25 | City |
| Exeter | 6 | 756 | 738 | 0.53% | 1,027 | 0.74 | City |
| Wheaton | 7 | 681 | 670 | 0.29% | 1,341 | 0.51 | City |
| Golden | 8 | 419 | 395 | 2.2% | 79 | 5.33 | CDP |
| Washburn | 9 | 416 | 406 | 0.48% | 462 | 0.90 | City |
| Butterfield | 10 | 398 | 380 | 1.02% | 860 | 0.46 | City |
| McCord Bend | 11 | 230 | 214 | 1.32% | 785 | 0.29 | Village |
| Emerald Beach | 12 | 227 | 206 | 1.79% | 317 | 0.72 | Village |
| Chain-O-Lakes | 13 | 108 | 105 | 0.93% | 1,286 | 0.08 | Village |
| Arrow Point | 14 | 77 | 76 | 0% | 403 | 0.19 | Village |
| Eagle Rock | 15 | 33 | 119 | -25% | 14 | 2.33 | CDP |
Monett is the largest city in Barry County, with a population of 10,258.
Eagle Rock is the smallest city in Barry County.
There are 15 cities in Barry County, Missouri.