Potomac is located in east Illinois. Potomac is part of Vermilion County. Potomac has 0.49 square miles of land area and has no water area. As of 2010-2014, the total Potomac population is 728, which has grown 6.90% since 2000. The population growth rate is higher than the state average rate of 3.62% and is lower than the national average rate of 11.61%. Potomac median household income is $44,750 in 2010-2014 and has grown by 11.26% since 2000. The income growth rate is much lower than the state average rate of 22.70% and is much lower than the national average rate of 27.36%. Potomac median house value is $74,100 in 2010-2014 and has grown by 71.93% since 2000. The house value growth rate is much higher than the state average rate of 34.33% and is much higher 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 Potomac is close to the state average in quality. The Potomac area code is 217.