14 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 72764 | Springdale | 57,468 |
| 72701 | Fayetteville | 48,964 |
| 72762 | Springdale | 47,402 |
| 72703 | Fayetteville | 35,964 |
| 72704 | Fayetteville | 29,475 |
| 72730 | Farmington | 11,068 |
| 72753 | Prairie Grove | 10,425 |
| 72774 | West Fork | 7,298 |
| 72744 | Lincoln | 5,314 |
| 72959 | Winslow | 2,957 |
| 72717 | Canehill | 1,042 |
| 72769 | Summers | 910 |
| 72749 | Morrow | 389 |
| 72729 | Evansville | 121 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 14 ZCTAs in Washington County, Arkansas (US Census).