12 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| McAlester | 1 | 18,082 | 18,159 | -0.07% | 1,016 | 18 | City |
| Krebs | 2 | 2,060 | 2,083 | -0.19% | 425 | 5 | City |
| Hartshorne | 3 | 1,856 | 1,945 | -0.8% | 571 | 3 | City |
| Quinton | 4 | 839 | 866 | -0.47% | 938 | 1 | Town |
| Haileyville | 5 | 689 | 715 | -0.58% | 666 | 1 | City |
| Kiowa | 6 | 613 | 595 | 0.49% | 493 | 1 | Town |
| Savanna | 7 | 610 | 624 | -0.33% | 419 | 1 | Town |
| Crowder | 8 | 294 | 303 | -0.34% | 143 | 2 | Town |
| Alderson | 9 | 216 | 219 | 0% | 370 | 1 | Town |
| Pittsburg | 10 | 176 | 181 | -0.56% | 369 | 0 | Town |
| Indianola | 11 | 142 | 148 | -0.7% | 445 | 0 | Town |
| Canadian | 12 | 141 | 147 | -0.7% | 187 | 1 | Town |
McAlester is the largest city in Pittsburg County, with a population of 18,082.
Canadian is the smallest city in Pittsburg County, with a population of 141.
There are 12 cities in Pittsburg County, Oklahoma.