Mackay is a city located in Idaho. With a 2020 population of 520, it is the 125th largest city in Idaho and the 13136th largest city in the United States. Mackay is currently growing at a rate of 1.76% annually and its population has increased by 0.58% since the most recent census, which recorded a population of 517 in 2010. Spanning over 1 miles, Mackay has a population density of 600 people per square mile.
The average household income in Mackay is $54,680 with a poverty rate of 29.91%. The median rental costs in recent years comes to $603 per month, and the median house value is $138,800. The median age in Mackay is 42.3 years, 41.5 years for males, and 42.5 years for females. For every 100 females there are 74.3 males.