Named Buckeye in 1888 by Thomas Newton Clanton, G.L. Spain, and M.M. Jackson for the nickname of Ohio, the native state of Jackson and Clanton. When a townsite was established on Clanton's land, he called it Sydney for Sydney, Ohio, his home town. State supreme court action was needed to establish the name Buckeye in 1931 when the town was incorporated (AZ-T101).