Greenfield is located in Greene county Illinois with a geographic area of 1.7 square miles. The total population in Greenfield is 1,481 with 41.1% male and 58.9% female. Children under age 5 represent 5.3% of the population, under age 18 equal 26.4% of the population and over age 65 is 16.9% of the population. The median household income is $50,139, per capita income is $24,068. There are a total of 479 housing units with 77.2% owner occupied. Education includes 39.2% of residents that are high school graduates and 17.7% with a bachelor's degree or higher. The average temperature in Greenfield in the summer is 74 degrees, and in the winter 27 degrees.
