Explore the Family Name Fitzwilliam

The meaning of Fitzwilliam

English, Scottish, and Irish (of Norman origin): from Anglo-Norman French fiz ‘son’ (see Fitz) + the personal name William.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Fitzwilliam in the United States?

Based on the Decennial U.S. Census data, the popularity of the surname Fitzwilliam has slightly decreased in the United States between 2000 and 2010. In 2000, the surname's rank was 66,878, and by 2010 it had slipped to 69,996, marking a decrease of 4.66%. Despite this fall in ranking, the absolute count of people bearing the Fitzwilliam name actually increased from 276 to 280, an upturn of 1.45%. However, when considering the proportion per 100,000 people, there was a decline of 10%, shifting from 0.1 in 2000 to 0.09 in 2010.

20002010Change
Rank#66,878#69,996-4.66%
Count2762801.45%
Proportion per 100k0.10.09-10%

Race and Ethnicity of people with the last name Fitzwilliam

As for the ethnic identity associated with the Fitzwilliam surname, the Decennial U.S. Census data shows some minor shifts between 2000 and 2010. The majority of Fitzwilliams identified themselves as White, although the percentage had a slight decrease from 92.03% in 2000 to 91.43% in 2010. The proportion of Fitzwilliams identifying as Hispanic also dropped significantly by 29.53%, while those identifying as Black saw a marginal dip of 1.38%. During this decade, there was an introduction of the Asian/Pacific Islander category with 1.79% associating with this ethnicity. Meanwhile, the categories of American Indian and Alaskan Native, along with two or more races, remained at zero, indicating no Fitzwilliams identified with these ethnicities in the given period.

20002010Change
White92.03%91.43%-0.65%
Black4.35%4.29%-1.38%
Asian/Pacific Islander0%1.79%0%
Hispanic2.54%1.79%-29.53%
Two or More Races0%0%0%
American Indian and Alaskan Native0%0%0%