SR 277 was the predecessor to SR 207 and ran from north of Chillicothe at SR 104 to Mount Sterling. The route when it was created in 1930 originally had its northern terminus at US 22 in Atlanta. The route was extended to its long-time northern terminus in 1935. No major changes would occur to the route until the route was renumbered to SR 207 in 1962 due to the construction of I-277 in Akron.
