
Caledonia County
- State:
- Vermont
- County Seat:
- Saint Johnsbury
Caledonia County's estimated 2025 population is 30,656 with a growth rate of 0.08% in the past year according to the most recent United States census data. Caledonia County is the 9th largest county in Vermont. The 2010 population was 31,163 and has seen a growth of -1.63% since that time.