Mackay is located close to the center of Idaho. Mackay is part of Custer County. Mackay has 0.86 square miles of land area and has no water area. As of 2010-2014, the total Mackay population is 495, which has shrunk 12.54% since 2000. The population growth rate is much lower than the state average rate of 23.61% and is much lower than the national average rate of 11.61%. Mackay median household income is $45,341 in 2010-2014 and has grown by 90.45% since 2000. The income growth rate is much higher than the state average rate of 25.98% and is much higher than the national average rate of 27.36%. Mackay median house value is $107,900 in 2010-2014 and has grown by 44.64% since 2000. The house value growth rate is lower than the state average rate of 50.99% 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 Mackay is better than the state average in quality. The Mackay area code is 208.