The Wyoming State Fair is a largely agricultural exposition and rodeo held every August in Douglas in Converse County in southeastern Wyoming. The fairgrounds are located on west Yellowstone Highway on the waterside of North Platte River. The state fair began in 1886 as the “First Annual Wyoming Territorial Fair near Cheyenne. After events in Laramie, Sheridan and Casper Douglas won the nomination in 1905 to host the fair thereafter.