4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Poplar Bluff | 1 | 16,124 | 16,283 | -0.16% | 1,194 | 14 | City |
| Qulin | 2 | 467 | 469 | 0% | 1,035 | 0 | City |
| Neelyville | 3 | 309 | 315 | -0.32% | 269 | 1 | City |
| Fisk | 4 | 308 | 311 | 0% | 951 | 0 | City |
Poplar Bluff is the largest city in Butler County, with a population of 16,124.
Fisk is the smallest city in Butler County, with a population of 308.
There are 4 cities in Butler County, Missouri.