The DuQuoin State Fair is an annual festival, centering on the themes of agriculture and country music, hosted by the U.S. state of Illinois on an approximately 1,600 acres (650 ha) fairground site adjacent to the southern Illinois town of Du Quoin. The state fair has been celebrated almost every year since 1923. In the 1920s, the Fair opened on Labor Day; currently, the fair is held annually over an 11-day period concluding on Labor Day of each year. In 2025, the Fair notched 282,202 fairgoers, described as a record attendance for the event.