who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.87. 24.8% are under the age of 18, 6.5% from 18 to 24, 27.1% from 25 to 44, 19.2% from 45 to 64, and 22.4% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 86.3 males. For every 100 females age 18 and over, there were 86.5 males. The median income for a household in the city was $40,662, and the median income for a family was $47,778. Males had a median income of $36,705 versus $22,083 for females. The per capita income for the city was $16,828. About 5.9% of families and 11.0% of the population were below the poverty line, including 17.5% of those under age 18 and 11.6% of those age 65 or over. Arts and culture Blairstown holds an annual "Sauerkraut Days" celebration. Rolle Bolle Many Blairstown residents still play the Belgian yard game Rolle Bolle (called krulbollen in Belgium), first brought to the region by Belgian immigrants in the late 19th and early 20th centuries. Blairstown's courts are located in the Blairstown Ball Park. A game of Rolle Bolle is part of the annual Sauerkraut Days celebration. Rolle Bolle is also played in the nearby towns of Belle Plaine, Clutier, Victor, Marengo, and Ladora. Education Benton Community School District operates local public schools. See also List of cities in Iowa References Cities in Benton County, Iowa Cities in Iowa Cedar Rapids, Iowa metropolitan area 1862 establishments in Iowa