Ansonia is located in New haven county Connecticut with a geographic area of 6.0 square miles. The total population in Ansonia is 18,709 with 49.0% male and 51.0% female. Children under age 5 represent 4.5% of the population, under age 18 equal 18.1% of the population and over age 65 is 19.2% of the population. The median household income is $53,709, per capita income is $30,285. There are a total of 8,191 housing units with 59.2% owner occupied. Education includes 36.3% of residents that are high school graduates and 24.5% with a bachelor's degree or higher. The average temperature in Ansonia in the summer is 68 degrees, and in the winter 27 degrees.