Lerna is located close to the center of Illinois. Lerna is between the Coles, Cumberland county. Lerna has 0.12 square miles of land area and has no water area. As of 2010-2014, the total Lerna population is 315, which has shrunk 2.17% 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%. Lerna median household income is $42,500 in 2010-2014 and has grown by 31.61% since 2000. The income growth rate is higher than the state average rate of 22.70% and is higher than the national average rate of 27.36%. Lerna median house value is $70,500 in 2010-2014 and has grown by 48.42% since 2000. The house value growth rate is higher than the state average rate of 34.33% and is about the same as 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 Lerna is better than the state average in quality. The Lerna area code is 217.