Prairie City, IL has a population of 424 and is the 20,557th largest city in the United States. The population density is 417 per sq mi which is 88% higher than the Illinois average and 360% higher than the national average. The median age in Prairie City is 40 which is approximately 6% higher than the Illinois average of 37. In Prairie City, 65% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 81% of Prairie City residents were born in Illinois, 18% were born out of state, 0% were born outside of the United States and 1% were foreign born.
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The population density in Prairie City is 88% higher than Illinois.
The median age in Prairie City is 6% higher than Illinois.
In Prairie City 93.87% of the population is White.
In Prairie City 4.01% of the population is Black or African American.