Oskaloosa is located in east Kansas. Oskaloosa is part of Jefferson County. Oskaloosa has 1.02 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Oskaloosa population is 1,292, which has grown 10.90% since 2000. The population growth rate is higher than the state average rate of 7.24% and is lower than the national average rate of 11.61%. Oskaloosa median household income is $51,000 in 2010-2014 and has grown by 51.41% since 2000. The income growth rate is much higher than the state average rate of 27.69% and is much higher than the national average rate of 27.36%. Oskaloosa median house value is $88,900 in 2010-2014 and has grown by 33.08% since 2000. The house value growth rate is much lower than the state average rate of 54.97% 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 Oskaloosa is much better than the state average in quality. The Oskaloosa area code is 785.