any race were 1.68% of the population. There were 11,427 households, out of which 30.1% had children under the age of 18 living with them, 48.9% were married couples living together, 11.7% had a female householder with no husband present, and 35.6% were non-families. 30.2% of all households were made up of individuals, and 13.0% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.93. Age spread: 24.6% under the age of 18, 9.1% from 18 to 24, 26.8% from 25 to 44, 22.5% from 45 to 64, and 17.0% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 91.3 males. For every 100 females age 18 and over, there were 88.1 males. In the 2000 census 37.7% of the population reported they were of German ancestry, 15.3% of Irish ancestry, 11.4% of British (English, Scottish, Welsh or Scots-Irish) ancestry, 7.8% of Scandinavian ancestry and 5.8% of Dutch ancestry. The median income for a household in the city was $34,159, and the median income for a family was $43,157. Males had a median income of $34,210 versus $20,882 for females. The per capita income for the city was $17,320. About 10.0% of families and 12.5% of the population were below the poverty line, including 18.5% of those under age 18 and 7.7% of those age 65 or over. Parks and recreation Parks The most notable parks are Eagle Point Park and Riverview Park. Other parks are Dewitt Park, Root Park, Southside Park, Edwin P Neubauer Park, River View Stadium, and Four Square Park. Clinton has the First White Settler in Clinton County Historical Marker. Tourist attractions The Bickelhaupt Arboretum is a non-profit arboretum with one of North America's largest collections of dwarf conifers. Felix Adler Children's Discovery Center a non-profit children's center to explore science, the arts and culture. Transportation U.S. Route 30 (Lincoln Highway), U.S. Route 67 (Great River Road), and Iowa Highway 136 pass through Clinton. For air travel, the Quad City International Airport, which is about 40 miles away in Moline, Illinois, is the closest commercial airport and can be reached in less than one hour by car. Chicago's O'Hare International Airport is about 140 miles east, and can typically be reached in less than three hours by car. Clinton has