"fitzgerald" (including "fitzgerald," as the survey was not case-sensitive), was the 390th most common surname in the 2000 united states census. 73,522 fitzgeralds were counted, with 27.25 fitzgeralds per 100,000 members of the population. respondents surnamed fitzgerald had self-reported ethnicities of 88.03% non-hispanic white only, 8.44% non-hispanic black only, 0.32% non-hispanic asian or pacific islander only, 1.28% non-hispanic asian only, 1.43% of two or more non-hispanic races, and 1.43% hispanic.