Assumption is located close to the center of Illinois. Assumption is between the Christian, Shelby county. Assumption has 0.88 square miles of land area and has no water area. As of 2010-2014, the total Assumption population is 1,266, which has grown 0.40% 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%. Assumption median household income is $36,944 in 2010-2014 and has grown by 7.16% 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%. Assumption median house value is $67,400 in 2010-2014 and has grown by 44.64% 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 Assumption is better than the state average in quality. The Assumption area code is 217.