Winfield is located in southeast Iowa. Winfield is between the Henry, Louisa county. Winfield has 1.05 square miles of land area and has no water area. As of 2010-2014, the total Winfield population is 951, which has shrunk 15.92% since 2000. The population growth rate is much lower than the state average rate of 5.19% and is much lower than the national average rate of 11.61%. Winfield median household income is $41,528 in 2010-2014 and has grown by 27.78% 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%. Winfield median house value is $82,800 in 2010-2014 and has grown by 36.18% 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 Winfield is much better than the state average in quality. The Winfield area code is 319.