AB, Harvard University, 1939. Master of Business Administration, Harvard University, 1943.
Salesman Gerrity Company, Boston, 1946-1949, president, 1949-1979, chairman, from 1979, president Newton, Massachusetts, from 1994.
Trustee York Health Foundation. Treasurer Massachusetts Eye and Ear Infirmary, Boston, since 1980. Chairman board directors Jackson Laboratory, Bar Harbor, Maine, 1975-1979.
President York Hospital, Maine, since 1980. Trustee Episcopal Diocese Boston, 1978-1982, Dumaine's Trust, York History Landmarks. Vestryman Church of the Redeemer.
Honorary consul Iceland, since 1969. Lieutenant (senior grade) United States Naval Reserve, 1943-1946. Member The Country Club (Brookline, Massachusetts), Harvard University Club (Boston).
Married Ruth Mathes, January 30, 1943. Children: Margot Gerrity Finley, James F. III, Peter, Ruth Gerrity Timme, Betsey Gerrity Lamson.