Until the 1976 renumbering, the Genoa Lane section of SR 206 was State Route 57, connecting Genoa to US 395. That route was defined by 1937. However, in the renumbering, SR 206 was assigned to return to US 395 using Jacks Valley Road rather than Genoa Lane.
Before 1976, when SR 206 was renumbered, the Genoa Lane section served as State Route 57, connecting Genoa to US 395. This route was defined in 1937. However, after the renumbering, SR 206 switched its connection from Genoa Lane to Jacks Valley Road.