
Monticello
- County:
- Green County
- County Seat:
- No
- Area (mi²):
- 1.192
- State:
- Wisconsin
Monticello is a village located in Green County, Wisconsin. Monticello has a 2025 population of 1,166. Monticello is currently declining at a rate of -0.34% annually and its population has decreased by -1.85% since the most recent census, which recorded a population of 1,188 in 2020.
The average household income in Monticello is $77,491 with a poverty rate of 7.19%. The median age in Monticello is 40.3 years: 37.3 years for males, and 44 years for females.