Sheffield is located in Franklin county Iowa with a geographic area of 5.6 square miles. The total population in Sheffield is 1,062 with 48.9% male and 51.1% female. Children under age 5 represent 9.6% of the population, under age 18 equal 27.2% of the population and over age 65 is 21.7% of the population. The median household income is $53,169, per capita income is $26,243. There are a total of 405 housing units with 80.7% owner occupied. Education includes 25.9% of residents that are high school graduates and 20.7% with a bachelor's degree or higher. The average temperature in Sheffield in the summer is 70 degrees, and in the winter 23 degrees.