Correctionville is a city in Woodbury County, Iowa, United States.

[3] It is supposedly the longest single-word place name in the state of Iowa.

According to the United States Census Bureau, the city has a total area of 0.57 square miles (1.48 km2), all land.

[9] As of the census of 2020,[11] there were 766 people, 315 households, and 189 families residing in the city.

There were 359 housing units at an average density of 597.6 per square mile (230.7/km2).

Hispanic or Latino persons of any race comprised 2.2% of the population.

As of the census[12] of 2010, there were 821 people, 331 households, and 208 families residing in the city.

There were 391 housing units at an average density of 686.0 per square mile (264.9/km2).

33.8% of all households were made up of individuals, and 17.8% had someone living alone who was 65 years of age or older.

There were 392 housing units at an average density of 683.8 per square mile (264.0/km2).

30.0% of all households were made up of individuals, and 18.7% had someone living alone who was 65 years of age or older.