Plainfield is a village in Will County, Illinois, United States. The village includes land in Plainfield and Wheatland townships. Part of the village is located in Kendall County (Na-Au-Say and Oswego townships). With the growth in the Chicago suburbs in the 1990s and 2000s, the village has seen a population increase, from 4,500 in 1990 to 13,000 in 2000 to over 37,000 in 2007. The village has established a community Preservation Commission and historic preservation ordinance. It is the home of the Lake Renwick Preserve, a county forest preserve used for birdwatching and other activities.
Plainfield is identified as the oldest community in Will County because the earliest settlement of Walkers’ Grove was established on the banks of the DuPage River by 1828. The community’s early prosperity was stunted when the Illinois & Michigan Canal opened in 1848, because the Village was not located along the canal. Located within the Village are numerous Greek Revival, upright-and-wing cottages, a school built in 1847, and a number of early-19th-century homes. The community currently has three buildings listed on the National Register of Historic Places: Plainfield House, Flanders House and a 1928 Standard Oil Gas Station.
Plainfield Community Consolidated School District 202 serves Plainfield and portions of Joliet, Crest Hill, Bolingbrook, Romeoville, and Plainfield Township in unincorporated parts of Will County,.