A native of Louisville, Kentucky, and graduate of Bishop Benedict Joseph Flaget High School, Bell was the oldest member of a rare three-generation major league family. His son, Buddy, has been a third baseman, coach, manager and front-office executive in the majors, and his grandsons, David and Mike, are both former infielders who have remained in baseball after their playing careers as coaches, managers or player development officials. Gus Bell wore uniform #25 during his nine years with the Cincinnati Reds (known as the "Redlegs" from 1953–58); Buddy Bell wore 25 in tribute to his father during much of his playing and managing career, including his tenure with the Reds. David, named manager of the Reds in 2019, carried on the tradition when he took Cincinnati uniform #25 as well.