Potosi is located in Grant county Wisconsin with a geographic area of 1.7 square miles. The total population in Potosi is 664 with 52.0% male and 48.0% female. Children under age 5 represent 6.0% of the population, under age 18 equal 16.1% of the population and over age 65 is 20.5% of the population. The median household income is $57,222, per capita income is $29,153. There are a total of 286 housing units with 77.6% owner occupied. Education includes 42.3% of residents that are high school graduates and 23.1% with a bachelor's degree or higher. The average temperature in Potosi in the summer is 66 degrees, and in the winter 17 degrees.