In the 1920 US Census for District 192, Ithaca Ward 5, Tompkins County, New York the family of Ralph Barnum was enumerated as follows:
Dwelling #352; Family #413
Barnum, Ralph B.; Head; Owns home free of mortgage; M; W; 42; Married; Can read and write; b. New York; Father b. Connecticut; Mother b. New York; Can speak English; Salesman; Bakery; Wage earner
Barnum, Maude; Wife; F; W; 35; Married; Can read and write; b. New York; Both parents b. Iowa; Can speak English; No occupation
Barnum, Ella; Daughter; F; W; 1-2/12; Single; Cannot read or write; b. New York; Both parents b. New York; Cannot speak English; No occupation
Barnum, Sarah; Sister; F; W; 40; Single; Can read and write; b. New York; Father b. Connecticut; Mother b. New York; Can speak English; Bookkeeper; Coal Company; Wage earner
Youge, Nina; Cousin; F; W; 20; Single; Can read and write; b. New York; Both parents b. New York; Can speak English; Chief Operator; Telephone company; Wage earner