22 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 05641 | Barre | 16,936 |
| 05602 | Montpelier | 12,250 |
| 05663 | Northfield | 6,840 |
| 05676 | Waterbury | 5,032 |
| 05673 | Waitsfield | 2,570 |
| 05667 | Plainfield | 2,412 |
| 05677 | Waterbury Center | 2,290 |
| 05660 | Moretown | 1,882 |
| 05658 | Marshfield | 1,725 |
| 05674 | Warren | 1,585 |
| 05651 | East Montpelier | 1,510 |
| 05682 | Worcester | 1,149 |
| 05647 | Cabot | 1,122 |
| 05650 | East Calais | 1,029 |
| 05669 | Roxbury | 768 |
| 05648 | Calais | 483 |
| 05640 | Adamant | 259 |
| 05678 | Websterville | 228 |
| 05681 | Woodbury | 119 |
| 05666 | North Montpelier | 17 |
| 05670 | South Barre | 0 |
| 05664 | Northfield Falls | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 22 ZCTAs in Washington County, Vermont (US Census).