Fairborn is a city in Greene County, Ohio, United States, near Dayton and Wright-Patterson Air Force Base. The population was 32,352 at the 2010 census. It claims to be the only city in the world with the name of Fairborn, a portmanteau word created from the names Fairfield and Osborn; the two villages that merged in 1950 after the Great Dayton Flood of 1913 forced Osborn to move out of a flood plain and alongside Fairfield.
Fairborn is the home of Wright State University. Fairborn is served by a branch of the Greene County Public Library. It is part of the Dayton Metropolitan Statistical Area. Fairborn is also home to the disaster training facility known as Calamityville.
Fairborn was formed from the union of the two villages of Fairfield and Osborn. Fairfield was originally founded in 1816 and Osborn in 1851.