Black earth is located in Dane county Wisconsin with a geographic area of 0.8 square miles. The total population in Black earth is 1,388 with 50.7% male and 49.3% female. Children under age 5 represent 6.6% of the population, under age 18 equal 21.2% of the population and over age 65 is 20.2% of the population. The median household income is $64,167, per capita income is $33,065. There are a total of 596 housing units with 78.9% owner occupied. Education includes 37.6% of residents that are high school graduates and 30.9% with a bachelor's degree or higher. The average temperature in Black earth in the summer is 66 degrees, and in the winter 17 degrees.
