 The first indications of a roadway following today's routing of SR 372 makes its appearance on Georgia state road maps in 1953, when the portion of the route in Fulton County appears on state maps as a county route, and which connected in the community of Birmingham with today's New Bullpen Road and then Union Hill Road to meet SR 20 east of Canton.By 1966, the Fulton County portion was unchanged, but the portion of today's route from Free Home to Ball Ground and SR 5 had been added as a connecting county route.It was 1969 before the entirety of the route had been mapped as connecting routes on Georgia state highway maps; however, no state route designation was extant at the time.