21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| McAlester | 1 | 18,128 | 18,157 | -0.03% | 1,018 | 17.80 | City |
| Longtown | 2 | 2,824 | 3,044 | 0.21% | 108 | 26.11 | CDP |
| Krebs | 3 | 2,060 | 2,084 | -0.24% | 425 | 4.84 | City |
| Hartshorne | 4 | 1,862 | 1,947 | -0.91% | 572 | 3.25 | City |
| Quinton | 5 | 839 | 863 | -0.59% | 938 | 0.89 | Town |
| Haileyville | 6 | 692 | 716 | -0.72% | 669 | 1.03 | City |
| Savanna | 7 | 612 | 622 | -0.33% | 427 | 1.43 | Town |
| Kiowa | 8 | 602 | 596 | 0.17% | 484 | 1.24 | Town |
| Canadian Shores | 9 | 351 | 304 | 7.01% | 333 | 1.05 | CDP |
| Arpelar | 10 | 326 | 229 | 1.24% | 146 | 2.23 | CDP |
| Crowder | 11 | 294 | 303 | -0.68% | 143 | 2.05 | Town |
| Haywood | 12 | 238 | 193 | 7.21% | 114 | 2.08 | CDP |
| Bug Tussle | 13 | 226 | 35 | 7.11% | 77 | 2.93 | CDP |
| Alderson | 14 | 218 | 220 | 0% | 373 | 0.58 | Town |
| Pittsburg | 15 | 173 | 177 | -0.57% | 363 | 0.48 | Town |
| Indianola | 16 | 144 | 149 | -0.69% | 451 | 0.32 | Town |
| Canadian | 17 | 143 | 148 | -0.69% | 189 | 0.76 | Town |
| Bache | 18 | 101 | 86 | 7.45% | 314 | 0.32 | CDP |
| Blanco | 19 | 95 | 68 | 6.74% | 145 | 0.66 | CDP |
| Wardville | 20 | 60 | 115 | 7.14% | 61 | 0.98 | CDP |
| Scipio | 21 | 47 | 40 | 6.82% | 68 | 0.69 | CDP |
McAlester is the largest city in Pittsburg County, with a population of 18,128.
Scipio is the smallest city in Pittsburg County.
There are 21 cities in Pittsburg County, Oklahoma.