Singen has been settled since the 4th/3rd century BC. Archaeological finds prove
Celtic settlement in the Singen area as early as 500 years before Roman times. In 1949, during construction work on Bergstraße in Singen, three Celtic graves dating from the 4th/3rd century BC were discovered on the outskirts of town. The first written record of Singen dates back to 769 in the Codex of
Lorsch Abbey. It mentions Ricger from "Sigincheim," who bequeathed land, a meadow, and a forest to the abbey. With the opening of the Residenzbahn railway in 1861, Singen transformed from an agricultural village into a working-class residential community. The railway connection enabled many residents to work in the surrounding cities, particularly Pforzheim and Karlsruhe. In 1888, Bertha Benz drove through the town in the motor vehicle developed by her husband, Carl Benz, on her journey to Pforzheim. == Transportation ==