Ionia is located in south Michigan. Ionia is part of Ionia County. Ionia has 5.35 square miles of land area and 0.13 square miles of water area. As of 2010-2014, the total Ionia population is 11,388, which has grown 7.75% since 2000. The population growth rate is much higher than the state average rate of -0.50% and is lower than the national average rate of 11.61%. Ionia median household income is $36,006 in 2010-2014 and has has shrunk by 5.96% since 2000. The income growth rate is much lower than the state average rate of 9.90% and is much lower than the national average rate of 27.36%. Ionia median house value is $82,500 in 2010-2014 and has shrunk by -6.59% since 2000. The house value growth rate is much higher than the state average rate of 3.98% and is much 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 Ionia is close to the state average in quality. The Ionia area code is 616.