He married Alfreda Mitchell, granddaughter of Charles L. Tiffany, on November 20, 1900, and had seven sons: Woodbridge (1901–1986) (professor), Hiram Bingham IV (1903–1988) (diplomat and World War II hero), Alfred Mitchell Bingham (1905–1998) (lawyer and author), Charles Tiffany (1906–1993) (physician), Brewster (1908–1995) (minister), Mitchell (1910–1994) (artist), and Jonathan Brewster Bingham (1914–1986) (Democratic Congressman).
After a divorce he married Suzanne Carroll Hill in June 1937.

In 1982 Temple University Press published Char Miller's doctoral dissertation on the Bingham family titled "Fathers and sons: The Bingham family and the American mission."
He married Alfreda Mitchell, granddaughter of Charles L. Tiffany, on November 20, 1900, and had seven sons: Woodbridge (1901–1986) (professor), Hiram Bingham IV (1903–1988) (diplomat and World War II hero), Alfred Mitchell Bingham (1905–1998) (lawyer and author), Charles Tiffany (1906–1993) (physician), Brewster (1908–1995) (minister), Mitchell (1910–1994) (artist), and Jonathan Brewster Bingham (1914–1986) (Democratic Congressman). After a divorce he married Suzanne Carroll Hill in June 1937.
In 1982 Temple University Press published Char Miller's doctoral dissertation on the Bingham family titled "Fathers and sons: The Bingham family and the American mission."
Hiram Bingham III