New haven is located in Allen county Indiana with a geographic area of 11.8 square miles. The total population in New haven is 15,934 with 47.2% male and 52.8% female. Children under age 5 represent 9.2% of the population, under age 18 equal 25.9% of the population and over age 65 is 18.1% of the population. The median household income is $52,827, per capita income is $25,403. There are a total of 6,362 housing units with 73.4% owner occupied. Education includes 28.9% of residents that are high school graduates and 26.6% with a bachelor's degree or higher. The average temperature in New haven in the summer is 73 degrees, and in the winter 29 degrees.