Monticello is a city next to the Mississippi River in Wright County, Minnesota, United States. The population was 14,455 at the 2020 census.

Wright County is a county in the East Central part of the U.S. state of Minnesota. As of the 2020 census, the population was 141,337. Its county seat is Buffalo. The county was founded in 1855. Wright County is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area. In terms of population, Wright County is the tenth-largest county in Minnesota and the fastest growing.