Kelso is located in southeast Missouri. Kelso is part of Scott County. Kelso has 0.32 square miles of land area and has no water area. As of 2010-2014, the total Kelso population is 508, which has shrunk 3.61% since 2000. The population growth rate is much lower than the state average rate of 7.74% and is much lower than the national average rate of 11.61%. Kelso median household income is $54,792 in 2010-2014 and has grown by 20.97% since 2000. The income growth rate is lower than the state average rate of 25.91% and is lower than the national average rate of 27.36%. Kelso median house value is $139,100 in 2010-2014 and has grown by 49.73% since 2000. The house value growth rate is about the same as the state average rate of 52.06% and is 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 Kelso is better than the state average in quality. The Kelso area code is 573.