Monticello is a city located in San Juan County Utah. It is also the county seat of San Juan County. With a 2020 population of 1,935, it is the 121st largest city in Utah and the 7732nd largest city in the United States . Monticello is currently declining at a rate of -0.87% annually and its population has decreased by -1.88% since the most recent census, which recorded a population of 1,972 in 2010. Monticello reached it's highest population of in . Spanning over 4 miles, Monticello has a population density of 535 people per square mile.
The average household income in Monticello is $75,190 with a poverty rate of 10.19%. The median rental costs in recent years comes to $904 per month, and the median house value is $175,500. The median age in Monticello is 28.7 years, 27.6 years for males, and 29.3 years for females.