Hartley is located in northwest Iowa. Hartley is between the Obrien, Clay, Osceola county. Hartley has 1.30 square miles of land area and has no water area. As of 2010-2014, the total Hartley population is 1,599, which has shrunk 7.73% 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%. Hartley median household income is $43,309 in 2010-2014 and has grown by 39.63% since 2000. The income growth rate is higher than the state average rate of 33.56% and is higher than the national average rate of 27.36%. Hartley median house value is $72,700 in 2010-2014 and has grown by 49.90% since 2000. The house value growth rate is lower than the state average rate of 53.09% and is higher 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 Hartley is much better than the state average in quality. The Hartley area code is 712.