Plattville was officially incorporated in March 2006 and had an estimated population of 245 in 2007. Plattville's first mayor was George "Jerry" Friel, who died in 2009. He was instrumental in his role in incorporating the village of Plattville in the mid-2000s, and spent some of his own money to file the town's incorporation papers.
According to the 2010 census, Plattville has a total area of 2.27 square miles (5.88 km2), all land. The village is part of the Chicago metropolitan area. Yorkville lies to the north, Joliet lies to the east, and Lisbon lies to the southwest.