New berlin is located in Sangamon county Illinois with a geographic area of 1.1 square miles. The total population in New berlin is 1,324 with 46.2% male and 53.8% female. Children under age 5 represent 6.4% of the population, under age 18 equal 30.1% of the population and over age 65 is 14.7% of the population. The median household income is $69,773, per capita income is $32,646. There are a total of 542 housing units with 85.8% owner occupied. Education includes 19.6% of residents that are high school graduates and 41.0% with a bachelor's degree or higher. The average temperature in New berlin in the summer is 74 degrees, and in the winter 27 degrees.