Marion is located in east Iowa. Marion is part of Linn County. Marion has 16.05 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Marion population is 35,809, which has grown 36.19% since 2000. The population growth rate is much higher than the state average rate of 5.19% and is much higher than the national average rate of 11.61%. Marion median household income is $62,532 in 2010-2014 and has grown by 28.69% since 2000. The income growth rate is lower than the state average rate of 33.56% and is about the same as the national average rate of 27.36%. Marion median house value is $146,800 in 2010-2014 and has grown by 39.54% since 2000. The house value growth rate is lower than the state average rate of 53.09% 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 Marion is much better than the state average in quality. The Marion area code is 319.