Donovan is located in northeast Illinois. Donovan is part of Iroquois County. Donovan has 0.31 square miles of land area and has no water area. As of 2010-2014, the total Donovan population is 350, which has shrunk 0.28% 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%. Donovan median household income is $40,625 in 2010-2014 and has has shrunk by 3.46% 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%. Donovan median house value is $78,700 in 2010-2014 and has shrunk by -32.94% since 2000. The house value growth rate is about the same as 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 Donovan is close to the state average in quality. The Donovan area code is 815.