Furchgott, who was Jewish, lived for most of his married and career life in Woodmere, NY (Long Island). He was married to Lenore Mandelbaum (February 1915 – April 1983) from 1941 until she died aged 68. They had three daughters: Jane, Terry and Susan. His daughter, Susan, was a prolific Artist in the San Francisco counter culture and a co-founder of the Kerista Commune (she was also known as "Even Eve" and "Eve Furchgott"). Robert Furchgott spent his later years with Margaret Gallagher Roth, who died March 14, 2006. He served as a professor emeritus at the State University of New York Downstate Medical Center. In 2008 he moved to Seattle's Ravenna neighborhood. Furchgott died on May 19, 2009 in Seattle. He is survived by his three daughters, four grandchildren, and three great-grandchildren.