
Monticello
- County:
- San Juan County
- County Seat:
- Yes
- Area (mi²):
- 3.351
- State:
- Utah
Monticello is a city located in San Juan County, Utah. Monticello has a 2025 population of 1,669. It is also the county seat of San Juan County. Monticello is currently declining at a rate of -1.77% annually and its population has decreased by -8.2% since the most recent census, which recorded a population of 1,818 in 2020.
The average household income in Monticello is $73,270 with a poverty rate of 5.67%. The median age in Monticello is 37.6 years: 43.3 years for males, and 33.6 years for females.