In the 1850 US Census for New York Ward 18, New York County, New York the family of Charles Barnum was enumerated as follows:
Dwelling #797; Family #1851
Chas. Barnum, 28, M, Printer, b. New York
Martha Barnum, 21, F, b. New York
Anna Barnum, 6, F, b. New York
Sarah Barnum, 4, F, b. New York
Ellen Riley, 15, F, b. Ireland
[Note: This family and four others, totaling 27 individuals, were all enumerated in the same dwelling].