Monticello is a city in Jones County, Iowa, United States.

As a result, the highway was moved approximately one mile east of the previous route.

Monticello is part of the Cedar Rapids Metropolitan Statistical Area.

There were 1,843 housing units at an average density of 333.5 per square mile (128.8/km2).

Hispanic or Latino persons of any race comprised 2.8% of the population.

There were 1,839 housing units at an average density of 292.4 per square mile (112.9/km2).

35.6% of all households were made up of individuals, and 18.1% had someone living alone who was 65 years of age or older.

There were 1,637 housing units at an average density of 445.1 per square mile (171.9/km2).

31.5% of all households were made up of individuals, and 17.4% had someone living alone who was 65 years of age or older.