Marquette Heights is a city located in Illinois. With a 2020 population of 2,609, it is the 439th largest city in Illinois and the 6694th largest city in the United States . Marquette Heights is currently declining at a rate of -0.69% annually and its population has decreased by -7.61% since the most recent census, which recorded a population of 2,824 in 2010. Marquette Heights reached it's highest population of 3,386 in 1980. Spanning over 1 miles, Marquette Heights has a population density of 2,679 people per square mile.
The average household income in Marquette Heights is $71,960 with a poverty rate of 8.65%. The median rental costs in recent years comes to $1,112 per month, and the median house value is $103,300. The median age in Marquette Heights is 37.9 years, 38.6 years for males, and 37.7 years for females.