14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 72764 | Springdale | 58,719 |
| 72701 | Fayetteville | 49,835 |
| 72762 | Springdale | 46,092 |
| 72703 | Fayetteville | 35,896 |
| 72704 | Fayetteville | 32,497 |
| 72730 | Farmington | 11,570 |
| 72753 | Prairie Grove | 10,744 |
| 72774 | West Fork | 7,082 |
| 72744 | Lincoln | 5,520 |
| 72959 | Winslow | 2,972 |
| 72717 | Canehill | 1,068 |
| 72769 | Summers | 907 |
| 72749 | Morrow | 296 |
| 72729 | Evansville | 154 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Washington County, Arkansas (US Census).