Mapleton is a city in Monona County, Iowa, United States.

[4] Between 7:20 and 7:30 p.m. on April 9, 2011, a rated EF3 wedge tornado ripped through the western half of Mapleton.

Early reports said that 50–60% of the town had been damaged or destroyed by the tornado which appeared to be 3/4ths of a mile wide.

According to the United States Census Bureau, the city has a total area of 1.60 square miles (4.14 km2), all land.

There were 631 housing units at an average density of 394.4 per square mile (152.3/km2).

41.5% of all households were made up of individuals, and 24.4% had someone living alone who was 65 years of age or older.

38.1% of all households were made up of individuals, and 26.1% had someone living alone who was 65 years of age or older.

A $2,200 bond approved by voters on June 15, 1880, resulted in the construction of a new school established on a site acquired for $200 on August 31, 1880.

The district purchased land for another new school, funded by a $95,000 bond that passed 280–70 on April 12, 1917, in August of the same year.

A vocational building funded by a $17,000 bond passed in 1926 finished construction in January 1927.

[17] An addition connecting both existing buildings in the Maple Valley School, funded by a $300,000 1957 bond, was completed in 1959.

[19] The following properties are listed on the National Register of Historic Places: