Plattville is a city located in Illinois. With a 2020 population of 252, it is the 1073rd largest city in Illinois and the 15939th largest city in the United States . Plattville is currently declining at a rate of -0.79% annually but its population has increased by 4.13% since the most recent census, which recorded a population of 242 in 2010. Plattville reached it's highest population of in . Spanning over 2 miles, Plattville has a population density of 112 people per square mile.
The average household income in Plattville is $95,509 with a poverty rate of 19.83%. The median rental costs in recent years comes to - per month, and the median house value is $231,600. The median age in Plattville is 37.7 years, 37.6 years for males, and 42.5 years for females.