| Zip Code | City | Population ↓ |
|---|---|---|
| 68008 | Blair | 12,662 |
| 68023 | Fort Calhoun | 2,683 |
| 68002 | Arlington | 2,292 |
| 68029 | Herman | 795 |
| 68034 | Kennard | 722 |
| 68068 | Washington | 206 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Washington County, Nebraska (US Census).