15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Monett | 1 | 10,222 | 9,652 | 1.13% | 1,163 | 9 | City |
| Cassville | 2 | 3,262 | 3,186 | 0.46% | 953 | 3 | City |
| Shell Knob | 3 | 1,424 | 1,306 | 0.21% | 150 | 9 | CDP |
| Purdy | 4 | 1,058 | 1,028 | 0.57% | 1,640 | 1 | City |
| Seligman | 5 | 944 | 809 | 2.94% | 757 | 1 | City |
| Exeter | 6 | 760 | 737 | 0.53% | 1,033 | 1 | City |
| Wheaton | 7 | 686 | 670 | 0.44% | 1,350 | 1 | City |
| Golden | 8 | 419 | 395 | 2.2% | 79 | 5 | CDP |
| Washburn | 9 | 417 | 404 | 0.48% | 463 | 1 | City |
| Butterfield | 10 | 406 | 380 | 1.25% | 877 | 0 | City |
| McCord Bend | 11 | 228 | 215 | 0.88% | 778 | 0 | Village |
| Emerald Beach | 12 | 227 | 206 | 1.79% | 317 | 1 | Village |
| Chain-O-Lakes | 13 | 103 | 101 | 0% | 1,226 | 0 | Village |
| Arrow Point | 14 | 78 | 75 | 0% | 408 | 0 | Village |
| Eagle Rock | 15 | 33 | 119 | -25% | 14 | 2 | CDP |
Monett is the largest city in Barry County, with a population of 10,222.
Eagle Rock is the smallest city in Barry County, with a population of 33.
There are 15 cities in Barry County, Missouri.