| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Monett | 1 | 10,366 | 9,639 | 1.15% | 1,179 | 9 | City |
| Cassville | 2 | 3,320 | 3,189 | 0.58% | 970 | 3 | City |
| Purdy | 3 | 1,067 | 1,029 | 0.47% | 1,654 | 1 | City |
| Seligman | 4 | 977 | 797 | 2.73% | 783 | 1 | City |
| Exeter | 5 | 770 | 737 | 0.65% | 1,046 | 1 | City |
| Wheaton | 6 | 696 | 647 | 0.43% | 1,370 | 1 | City |
| Butterfield | 7 | 424 | 388 | 0.95% | 916 | 0 | City |
| Washburn | 8 | 411 | 392 | 0.74% | 457 | 1 | City |
| Emerald Beach | 9 | 230 | 204 | 1.77% | 321 | 1 | Village |
| McCord Bend | 10 | 227 | 215 | 0.89% | 775 | 0 | Village |
| Chain-O-Lakes | 11 | 107 | 104 | 0% | 1,274 | 0 | Village |
| Arrow Point | 12 | 80 | 76 | 0% | 419 | 0 | Village |
Monett is the largest city in Barry County, with a population of 10,366.
Arrow Point is the smallest city in Barry County, with a population of 80.
There are 12 cities in Barry County, Missouri.