and 35.8% were non-families. 31.0% of all households were made up of individuals, and 14.8% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.87. In the city, the population was spread out, with 23.9% under the age of 18, 8.4% from 18 to 24, 26.5% from 25 to 44, 21.3% from 45 to 64, and 19.9% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 88.2 males. For every 100 females age 18 and over, there were 82.7 males. The median income for a household in the city was $31,905, and the median income for a family was $41,511. Males had a median income of $30,824 versus $22,121 for females. The per capita income for the city was $16,541. About 7.4% of families and 10.7% of the population were below the poverty line, including 12.0% of those under age 18 and 9.3% of those age 65 or over. Notable people Warren Ambrose, professor emeritus of mathematics at the Massachusetts Institute of Technology and at the University of Buenos Aires Julian N. Frisbie, decorated brigadier general, USMC, during World War II and later Warden of Southern Michigan Prison Edward Alsworth Ross, sociologist, eugenicist, and major figure of early criminology Henry Calvert Simons, economist at the University of Chicago Luella Wilcox St. Clair Moss, suffragist, one of the first female college presidents in the U.S.; born in Virden Melvin Vaniman, aviator and photographer who specialized in panoramic images Further reading David Markwell. "A Turning Point: the Lasting Impact of the 1898 Virden Mine Riot," Journal of the Illinois State Historical Society, Volume: 99. Issue: 3/4. 2006. pp 211+. online edition Rosemary Feuer. "Remember Virden! The Coal Mines Wars of 1898-1900." Illinois History Teacher, Volume 13:2, 2006, pp. 10–22. online edition References External links Cities in Illinois Cities in Macoupin County, Illinois Cities in Sangamon County, Illinois Cities in Springfield metropolitan area, Illinois