In the 1880 US Census for District 90, Newport, Newport County, Rhode Island the family of William H. P. Barnum was enumerated as follows:
Dwelling #122; Family #174
Barnum, William; W; M; 39; Head; Married; Teamster; b. Rhode Island; Both parents b. Rhode Island
Barnum, Catherine; W; F; 38; Wife; Keeping House; Cannot read or write; b. Rhode Island; Both parents b. Rhode Island
Barnum, Fanny; W; F; 14; Daughter; Single; At school; Attended school within the census year; b. Rhode Island; Both parents b. Rhode Island
Barnum, William Jr.; W; M; 7; Son; Single; b. Rhode Island; Both parents b. Rhode Island
Barnum, Charles; W; M; 5; Son; Single; b. Rhode Island; Both parents b. Rhode Island