Born: April 30, 1771, Richmond, New Hampshire.
Died: June 7, 1852, Boston, Massachusetts.
Buried: Mount Auburn Cemetery, Cambridge, Massachusetts.
Hosea was the son of Baptist minister Maturin Ballou.
He became pastor of a congregation in Dana, Massachusetts (the town was dissolved in 1938 as part of the creation of the Quabbin Reservoir), in 1794.
He also preached at Barnard, Vermont, and surrounding towns (1801–07); Portsmouth, New Hampshire (1807–15); Salem, Massachusetts (1815–17); and was pastor of the Second Universalist Church in Boston from December 1817 until his death.