16 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 05819 | Saint Johnsbury | 9,323 |
| 05851 | Lyndonville | 5,972 |
| 05843 | Hardwick | 2,283 |
| 05828 | Danville | 2,042 |
| 05836 | East Hardwick | 1,447 |
| 05871 | West Burke | 1,369 |
| 05046 | Groton | 1,234 |
| 05832 | East Burke | 1,061 |
| 05821 | Barnet | 1,025 |
| 05873 | West Danville | 753 |
| 05866 | Sheffield | 746 |
| 05867 | Sutton | 677 |
| 05042 | East Ryegate | 626 |
| 05862 | Peacham | 412 |
| 05850 | Lyndon Center | 351 |
| 05050 | McIndoe Falls | 159 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in Caledonia County, Vermont (US Census).