Mills is located close to the center of Wyoming. Mills is part of Natrona County. Mills has 2.15 square miles of land area and 0.03 square miles of water area. As of 2010-2014, the total Mills population is 3,545, which has grown 36.82% since 2000. The population growth rate is much higher than the state average rate of 16.50% and is much higher than the national average rate of 11.61%. Mills median household income is $33,571 in 2010-2014 and has grown by 25.65% since 2000. The income growth rate is much lower than the state average rate of 53.73% and is lower than the national average rate of 27.36%. Mills median house value is $100,200 in 2010-2014 and has grown by 90.13% since 2000. The house value growth rate is lower than the state average rate of 95.96% and is much 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 Mills is worse than the state average in quality. The Mills area code is 307.