Walker is located in east Iowa. Walker is between the Linn, Buchanan county. Walker has 0.76 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Walker population is 712, which has shrunk 5.07% 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%. Walker median household income is $65,357 in 2010-2014 and has grown by 50.46% since 2000. The income growth rate is much higher than the state average rate of 33.56% and is much higher than the national average rate of 27.36%. Walker median house value is $119,300 in 2010-2014 and has grown by 45.31% since 2000. The house value growth rate is lower than the state average rate of 53.09% and is about the same as 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 Walker is much better than the state average in quality. The Walker area code is 319.