Cahokia is a city located in Illinois. With a 2020 population of 13,536, it is the 173rd largest city in Illinois and the 2480th largest city in the United States . Cahokia is currently declining at a rate of -1.25% annually and its population has decreased by -11.19% since the most recent census, which recorded a population of 15,241 in 2010. Cahokia reached it's highest population of 20,649 in 1970. Spanning over 10 miles, Cahokia has a population density of 1,387 people per square mile.
The average household income in Cahokia is $48,892 with a poverty rate of 30.34%. The median rental costs in recent years comes to $891 per month, and the median house value is $47,900. The median age in Cahokia is 33.9 years, 31.9 years for males, and 36.8 years for females.