 Kleinostheim benefits from lying near prosperous cities such as Frankfurt, Offenbach and Aschaffenburg by serving as a commuter town.Since the 1960s, the community's population has more than doubled from 4,000 to over 8,000.Kleinostheim was most likely founded in the 6th century as Ossenheim by the Franks, and in 975, it had its first documentary mention.