Plattville, IL has a population of 254 and is the 23,334th largest city in the United States. The population density is 102 per sq mi which is 54% lower than the Illinois average and 13% higher than the national average. The median age in Plattville is 33 which is approximately 13% lower than the Illinois average of 37. In Plattville, 66% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 89% of Plattville residents were born in Illinois, 9% 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 Plattville is 54% lower than Illinois.
The median age in Plattville is 13% lower than Illinois.
In Plattville 97.24% of the population is White.
In Plattville 0.39% of the population is Black or African American.