Potosi is located in east Missouri. Potosi is part of Washington County. Potosi has 2.33 square miles of land area and has no water area. As of 2010-2014, the total Potosi population is 2,666, which has grown 0.15% since 2000. The population growth rate is much lower than the state average rate of 7.74% and is much lower than the national average rate of 11.61%. Potosi median household income is $25,288 in 2010-2014 and has grown by 42.85% since 2000. The income growth rate is much higher than the state average rate of 25.91% and is much higher than the national average rate of 27.36%. Potosi median house value is $83,200 in 2010-2014 and has grown by 40.07% since 2000. The house value growth rate is lower than the state average rate of 52.06% and is lower than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Potosi is worse than the state average in quality. The Potosi area code is 573.