Dumont is a city in Butler County, Iowa, United States.

According to the United States Census Bureau, the city has a total area of 1.76 square miles (4.56 km2), all land.

[6] As of the census of 2020,[8] there were 634 people, 272 households, and 166 families residing in the city.

There were 294 housing units at an average density of 168.1 per square mile (64.9/km2).

There were 312 housing units at an average density of 177.3 per square mile (68.5/km2).

35.6% of all households were made up of individuals, and 20.7% had someone living alone who was 65 years of age or older.

There were 316 housing units at an average density of 180.2 per square mile (69.6/km2).

33.2% of all households were made up of individuals, and 23.8% had someone living alone who was 65 years of age or older.

[11] It was established on July 1, 1995, by the merger of the Dumont and Hampton school districts.