Allerton is a village in Sidell Township, Vermilion County, Illinois, United States. A small portion of the village extends into Champaign County. The population was 262 at the 2020 census. History Samuel W. Allerton was a wealthy landowner in Vermilion County who had made his fortune on the agricultural and livestock markets. He was one of the founders of the First National Bank of Chicago and Co-founder of the Chicago Union Stockyards. The town was founded on a tract of land in the southwestern part of the county which Allerton purchased in 1880. It had formerly been known as Twin Grove Farm (because of two very similar groves of trees in the area). When the C&EI railroad came through the area, he gave them a right-of-way through his land, and then established a grain elevator and platted the village; later he provided land for a park, established a bank, provided funds for a new brick school in 1894, and installed a water system. Allerton himself continued to live in Chicago. Samuel Allerton also owned 12,000 acres in Piatt County, part of which later became the Robert Allerton Park, farther west in the Monticello area; Robert was Samuel's son who oversaw his father's agricultural interests in Illinois. Samuel's total land holdings included 78,000 acres across four Midwest states. Geography Allerton is located near the southwestern corner of Vermilion County at (39.912859, -87.935636). The village extends west into Champaign County in two places. Champaign-Urbana is about to the northwest, and Danville is the same distance to the northeast. According to the 2021 census gazetteer files, Allerton has a total area of , all land. Allerton is located on the county line, and a small portion of is located in Champaign County, Illinois. Demographics As of the 2020 census there were 262 people, 101 households, and 76 families residing in the village. The population density was . There were 116 housing units at an average density of . The racial makeup of the village was 91.60% White, 2.67% African American, 0.76% Native American, and 4.96% from two or more races. Hispanic or Latino of any race were 1.15% of the population. There were 101 households, out of which 52.48% had children under the age of 18 living with them, 59.41% were married couples living together, 9.90% had a female householder with no husband present, and 24.75% were non-families. 14.85% of all households were