Livingston retired in 1970, and moved to Santa Fe, New Mexico. He continued to occasionally work as a consultant at the nearby Los Alamos National Laboratory, and sometimes acted as an administrative judge for the Nuclear Regulatory Commission. He married Lois Robinson while he was a graduate student at Berkeley in 1930. They had two children, a daughter, Diane, and a son, Stephen. They were divorced in 1949, and he married Margaret (Peggy) Hughes in 1952. After Peggy died he remarried Lois in 1959. He died in Santa Fe on August 25, 1986 from complications arising from prostate cancer. He was survived by his wife Lois and children Diane and Stephen.
