Prairie City is a city located in McDonough County Illinois. With a 2020 population of 345, it is the 980th largest city in Illinois and the 14809th largest city in the United States . Prairie City is currently declining at a rate of -0.86% annually and its population has decreased by -8.97% since the most recent census, which recorded a population of 379 in 2010. Prairie City reached it's highest population of in . Spanning over 1 miles, Prairie City has a population density of 342 people per square mile.
The average household income in Prairie City is $35,221 with a poverty rate of 16.67%. The median rental costs in recent years comes to $613 per month, and the median house value is $60,400. The median age in Prairie City is 44.9 years, 44.9 years for males, and 44.8 years for females.