8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ortonville | 1 | 1,945 | 2,020 | -0.61% | 464 | 4 | City |
| Graceville | 2 | 506 | 520 | -0.39% | 874 | 1 | City |
| Clinton | 3 | 364 | 384 | -0.82% | 380 | 1 | City |
| Beardsley | 4 | 202 | 213 | -0.98% | 430 | 0 | City |
| Odessa | 5 | 102 | 104 | 0% | 106 | 1 | City |
| Correll | 6 | 26 | 28 | 0% | 68 | 0 | City |
| Johnson | 7 | 23 | 25 | 0% | 74 | 0 | City |
| Barry | 8 | 14 | 14 | 0% | 55 | 0 | City |
Ortonville is the largest city in Big Stone County, with a population of 1,945.
Barry is the smallest city in Big Stone County, with a population of 14.
There are 8 cities in Big Stone County, Minnesota.