Effingham is located in southeast Illinois. Effingham is between the Effingham, Cumberland, Shelby county. Effingham has 9.86 square miles of land area and 0.06 square miles of water area. As of 2010-2014, the total Effingham population is 12,428, which has grown 0.36% since 2000. The population growth rate is lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Effingham median household income is $44,674 in 2010-2014 and has grown by 28.52% since 2000. The income growth rate is higher than the state average rate of 22.70% and is about the same as the national average rate of 27.36%. Effingham median house value is $116,000 in 2010-2014 and has grown by 33.49% since 2000. The house value growth rate is about the same as 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 Effingham is better than the state average in quality. The Effingham area code is 217.