years of age or older. The average household size was 2.35 and the average family size was 3.01. 25.5% were under the age of 18, 8.7% from 18 to 24, 27.5% from 25 to 44, 22.2% from 45 to 64, and 16.2% were 65 years of age or older. The median age was 38 years. For every 100 females, there were 91.1 males. For every 100 females age 18 and over, there were 84.3 males. The median income for a household in the city was $36,136, and the median income for a family was $42,969. Males had a median income of $31,641 versus $22,500 for females. The per capita income for the city was $19,183. About 4.3% of families and 5.7% of the population were below the poverty line, including 6.3% of those under age 18 and 7.8% of those age 65 or over. Education Winthrop is home to the East Buchanan Community School District, which also covers the communities of Quasqueton, Aurora, and Monti. The district operates an interconnected elementary school, middle school, and high school. Notable people Robert S. Doran, math professor Robert Gallery, NFL offensive guard Michelle Monaghan, actress Craig Quigley, US Navy admiral and Assistant Secretary of Defense References External links City of Winthrop Portal style website, government, library, events, and more City-Data Comprehensive statistical data and more about Winthrop Cities in Buchanan County, Iowa Cities in Iowa 1857 establishments in Iowa Populated places established in 1857