
San Juan County
- State:
- Utah
- County Seat:
- Monticello
San Juan County's estimated 2025 population is 14,262 with a growth rate of -0.34% in the past year according to the most recent United States census data. San Juan County is the 17th largest county in Utah. The 2010 population was 14,837 and has seen a growth of -3.88% since that time.