Hamilton resumed the practice of law in Toledo after the war, and was prosecuting attorney of Lucas County in 1869.[3] He was elected mayor of Toledo in 1887 and 1889, serving four years.[2]
Hamilton was married October 13, 1876 to Sibyl Williams, who died in 1877.[2] He married July 27, 1898 to Ethel B. Allen.[3] He was a member of the Methodist Episcopal Church.[3]