Mackinaw is a city located in Tazewell County Illinois. With a 2020 population of 1,860, it is the 502nd largest city in Illinois and the 7895th largest city in the United States . Mackinaw is currently declining at a rate of -0.64% annually and its population has decreased by -4.62% since the most recent census, which recorded a population of 1,950 in 2010. Mackinaw reached it's highest population of in . Spanning over 1 miles, Mackinaw has a population density of 1,570 people per square mile.
The average household income in Mackinaw is $76,161 with a poverty rate of 6.41%. The median rental costs in recent years comes to $757 per month, and the median house value is $138,700. The median age in Mackinaw is 38.5 years, 40.8 years for males, and 36.6 years for females.