years of age or older. The average household size was 2.26 and the average family size was 2.85. Age spread: 24.9% under the age of 18, 9.4% from 18 to 24, 25.6% from 25 to 44, 23.1% from 45 to 64, and 17.1% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 100.9 males. For every 100 females age 18 and over, there were 91.3 males. The median income for a household in the city was $39,688, and the median income for a family was $48,750. Males had a median income of $30,536 versus $24,464 for females. The per capita income for the city was $18,156. About 4.6% of families and 8.0% of the population were below the poverty line, including 10.2% of those under age 18 and 5.7% of those age 65 or over. Education Nashua-Plainfield Community School District operates area public schools. It was established on July 1, 1997 by the merger of the Nashua and Plainfield school districts. Plainfield houses the intermediate school, while the elementary school and Nashua-Plainfield Middle School/High School are in Nashua. Notable people Guy Stanton Ford, former president of the University of Minnesota Derek Pagel, football player Scott Walker (politician), former Governor of Wisconsin References External links Plainfield, Iowa Portal style website, Government, Library, Local links, and more Horton Plainfield Historical Club Cities in Bremer County, Iowa Cities in Iowa Waterloo – Cedar Falls metropolitan area