Dwight is a village located mainly in Livingston County, Illinois, with a small portion in Grundy County. The population was 4,032 at the 2020 census. Dwight contains an original stretch of U.S. Route 66, and from 1892 until 2016 continuously used a railroad station designed in 1891 by Henry Ives Cobb. Interstate 55 bypasses the village to the north and west. Geography Dwight is located in northeastern Livingston County at (41.092975, -88.427273). It extends north into southern Grundy County to include the commercial area near the northern exit with Interstate 55. I-55 leads northeast to Chicago and southwest to Bloomington. Illinois Route 17 passes through the center of Dwight as Mazon Avenue, leading east to Kankakee and west to Wenona. Illinois Route 47 (Union Street) passes through the east side of Dwight, leading north to Morris and south to Gibson City. According to the 2010 census, Dwight has a total area of , of which (or 99.69%) are land and (or 0.31%) are water. Climate History Founding Dwight was laid out on January 30, 1854, by Richard Price Morgan Jr. (1828-1910), James C. Spencer (1828 – after 1890), and John Lathrop (1809 – 1870). Each of these three men took a quarter of the land. All were working as engineers for the Chicago and Mississippi Railroad. The final quarter was jointly owned by two Bloomington brothers, Jesse W. Fell (1808 – 1878) and Kersey H. Fell (1815 – 1893). All five men had links to the railroad which was to open from Bloomington to Joliet in 1854. Spencer was born in the Hudson River valley south of Albany; his ancestors included a United States Supreme Court Chief Justice and two governors of New York State; he was later to have an important career in Wisconsin railroads. Lathrop was a civil engineer with a long history of working with canals and railroads in New York; he would soon return to Buffalo. Morgan was the son of a noted civil engineer, and he later became nationally known for his work on electric railroads in New York. The Fell brothers were Bloomington land developers who had been active in helping found many central Illinois towns including Clinton, Normal, Pontiac, and Towanda. They were employed by the railroad as land agents; the Fells had a role in persuading Abraham Lincoln to write his autobiography. The plan of the founders was to purchase a block