of age or older. The average household size was 2.31 and the average family size was 2.81. Age spread: 21.3% under the age of 18, 9.0% from 18 to 24, 24.9% from 25 to 44, 19.0% from 45 to 64, and 25.8% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 98.1 males. For every 100 females age 18 and over, there were 98.8 males. The median income for a household in the city was $35,125, and the median income for a family was $43,750. Males had a median income of $30,893 versus $19,000 for females. The per capita income for the city was $16,622. About 5.0% of families and 11.0% of the population were below the poverty line, including 14.1% of those under age 18 and 6.5% of those age 65 or over. Education Thornton is part of the West Fork Community School District, formed in 2011 by the merger of the Sheffield–Chapin–Meservey–Thornton (SCMT) Community School District and the Rockwell–Swaledale Community School District. Thornton became a part of the West Fork Schools whole grade-sharing partnership as of the 2008–09 school year, prior to the formal district merger. SCMT was formed in 2007 by the merger of the Meservey–Thornton Community School District and the Sheffield–Chapin Community School District. Meservey–Thornton, in turn, formed in 1963 from the merger of the Thornton Community School District and the Meservey Community School District. Thornton Public Library serves the community. Thornton School The school building served the community until 2007. The mascot for secondary athletic teams was the Lancers. There was a prior school building that was destroyed in a fire. The new building opened in 1936 and received extra classrooms, office space, a gymnasium, and a library in a 1955 addition. The building initially served Thornton and its associated school district only, but after it merged into Meservey–Thornton in 1963 it began serving the consolidated district's senior high school students. Junior high school students were later moved to the building. The Meservey School closed in 1983, making the Thornton School K–12. High school students were moved out of the building as a result of the grade-sharing agreement between Meservey–Thornton and Sheffield–Chapin. At that point the Lancers mascot was now only used at the middle school level. Due to declining enrollment, the former S-C, M-T, and neighboring Rockwell–Swaledale school districts entered a whole-grade sharing