Dayton, IL has a population of 520 and is the 19,294th largest city in the United States. The population density is 230 per sq mi which is 4% higher than the Illinois average and 154% higher than the national average. The median age in Dayton is 51 which is approximately 36% higher than the Illinois average of 37. In Dayton, 54% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 88% of Dayton residents were born in Illinois, 11% 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 Dayton is 4% higher than Illinois.
The median age in Dayton is 36% higher than Illinois.
In Dayton 99.62% of the population is White.
In Dayton 0.38% of the population is Black or African American.