| Zip Code | City | Population ↓ |
|---|---|---|
| 74501 | Mcalester | 28,616 |
| 74547 | Hartshorne | 2,815 |
| 74561 | Quinton | 1,950 |
| 74554 | Krebs | 1,917 |
| 74553 | Kiowa | 1,382 |
| 74425 | Canadian | 1,036 |
| 74442 | Indianola | 790 |
| 74546 | Haileyville | 597 |
| 74430 | Crowder | 530 |
| 74565 | Savanna | 446 |
| 74560 | Pittsburg | 435 |
| 74528 | Blanco | 144 |
| 74522 | Alderson | 128 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 13 ZCTAs in Pittsburg County, Oklahoma (US Census).