Joppa is located in south Illinois. Joppa is part of Massac County. Joppa has 0.49 square miles of land area and 0.02 square miles of water area. As of 2010-2014, the total Joppa population is 319, which has shrunk 22.00% since 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Joppa median household income is $30,938 in 2010-2014 and has grown by 73.68% since 2000. The income growth rate is much higher than the state average rate of 22.70% and is much higher than the national average rate of 27.36%. Joppa median house value is $42,500 in 2010-2014 and has grown by 44.56% since 2000. The house value growth rate is higher than the state average rate of 34.33% 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 Joppa is close to the state average in quality. The Joppa area code is 618.