Monticello is located in Iowa. Monticello, Iowa has a population of 3,994. Monticello is more family-centric than the surrounding county with 33.69% of the households containing married families with children. The county average for households married with children is 25.42%.
The median household income in Monticello, Iowa is $57,851. The median household income for the surrounding county is $63,279 compared to the national median of $69,021. The median age of people living in Monticello is 38.4 years.
The average high temperature in July is 83.7 degrees, with an average low temperature in January of 8.7 degrees. The average rainfall is approximately 37 inches per year, with 27.7 inches of snow per year.