In the 1860 US Census for Bangor, Franklin County, New York the family of Carlos Barnum was enumerated as follows:
Dwelling #1169; Family #1169
Carlos Barnum, 41, M, Farmer, Real property $3,720, b. New York
Lucy Barnum, 32, F, Farmer, b. New York
Darius Barnum, 8, M, b. New York, Attended school within the year
Henry Barnum, 6, M, b. New York, Attended school within the year
Harriet Barnum, 6, F, b. New York, Attended school within the year
Genett Barnum, 2, F, b. New York
His father and mother and his brother Harvey lived next door and several distant cousins lived nearby.
He was buried in North Bangor Cemetery.