The 1972 United States presidential election in Illinois was held on November 7, 1972 as part of the 1972 United States presidential election. Incumbent President Richard Nixon won the state of Illinois with 59.03 percent of the vote, carrying the state's 26 electoral votes. He defeated his main opponent, Democratic candidate George McGovern in Illinois by a large margin of 18.52%, which still left Illinois 4.63% more Democratic than the nation.

Jackson County is a county located in the U.S. state of Illinois with a population of 52,974 at the 2020 census. Its county seat is Murphysboro, and its most populous city is Carbondale, home to the main campus of Southern Illinois University. The county was incorporated on January 10, 1816, and named for Andrew Jackson. The community of Brownsville served as the fledgling county's first seat.