Warrensburg is a city located in Macon County Illinois. With a 2020 population of 1,114, it is the 626th largest city in Illinois and the 9887th largest city in the United States . Warrensburg is currently declining at a rate of -0.54% annually and its population has decreased by -7.93% since the most recent census, which recorded a population of 1,210 in 2010. Warrensburg reached it's highest population of in . Spanning over 1 miles, Warrensburg has a population density of 1,529 people per square mile.
The average household income in Warrensburg is $73,708 with a poverty rate of 3.84%. The median rental costs in recent years comes to $619 per month, and the median house value is $98,800. The median age in Warrensburg is 33.9 years, 33 years for males, and 36.5 years for females.