made up of individuals, and 17.7% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.91. In the city, the population was spread out, with 25.0% under the age of 18, 6.4% from 18 to 24, 26.6% from 25 to 44, 20.5% from 45 to 64, and 21.6% who were 65 years of age or older. For every 100 females, there were 85.2 males. For every 100 females age 18 and over, there were 82.0 males. The median income for a household in the city was $32,857, and the median income for a family was $37,457. Males had a median income of $28,795 versus $20,821 for females. The per capita income for the city was $14,811. About 8.2% of families and 9.7% of the population were below the poverty line, including 13.3% of those under age 18 and 9.6% of those age 65 or over. Education Clarksville Community School District operates local public schools. Notable people Jeffrey John Downs, participant on season one of A&E's 60 Days In, is a native of Clarksville. He also appeared on season one of BYUtv's Relative Race with his wife Emily. Clarksville native Maddie Poppe won season 16 of American Idol in 2018. References External links Official City Website School website Clarksville Star Newspaper Cities in Butler County, Iowa Cities in Iowa