of 18 living with them, 73.8% were married couples living together, 4.3% had a female householder with no husband present, and 19.6% were non-families. 16.1% of all households were made up of individuals, and 8.0% had someone living alone who was 65 years of age or older. The average household size was 2.74 and the average family size was 3.08. In the town, the population was spread out, with 4% under the age of 5, 23.9% under the age of 18, 3.6% from 18 to 24, 29.4% from 25 to 44, 28.0% from 45 to 64, and 16% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 98.4 males. For every 100 females age 18 and over, there were 96.8 males. The median income for a household in the town was $112,137. The per capita income for the town was $48,537. None of the families and 1.7% of the population were living below the poverty line, including no under eighteens and 1.4% of those over 64. Education Students attending school in Killingworth are a part of Connecticut's Regional School District #17, which consists of Haddam and its villages of Haddam Neck (located on the eastern bank of the Connecticut River) and Higganum. The high school, Haddam-Killingworth High School (often abbreviated as simply "HK"), is located in Higganum. The middle-school, Haddam Killingworth Intermediate-Middle School, was built in Killingworth in 2006 and houses grades 4 through 8. The elementary schools, Burr Elementary School and Killingworth Elementary School are located in Higganum and Killingworth respectively. The school's sports teams are called the 'Cougars'. Transportation The Estuary Transit District provides public transportation throughout Killingworth and the surrounding towns through its 9 Town Transit Service. Services include connections to the Old Saybrook Train Station, served by Amtrak and Shoreline East railroads. Popular culture The town was the subject of the poet Henry Wadsworth Longfellow's poem "The Birds of Killingworth" published in Tales of a Wayside Inn. 1999: The largest tree in Rockefeller Center history, high, was chosen from Killingworth, CT. Notable people Jeff Bagwell, Hall of Fame Major League Baseball player for the Houston Astros Carleton Beals, journalist, author, historian, and a crusader with special interests in Latin America Abel Buell, publisher of the first map of the new United States created by an American Jonathan Bush, American banker, brother of President George H.