How Common Is the Surname Duffy?
The surname Duffy is the #892 most common last name in the United States, with an estimated 44,237 bearers. That's about 1 in 7,593 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Duffy surname's frequency in the U.S. population, its rank among all American surnames, and a breakdown of ancestry and ethnicity data from the Census. You can also check how many people share any first + last name combination involving Duffy.
Estimated Americans with this Surname
44,237
About 1 in 7,593 people in the U.S.
Census Rank
#892
Frequency Rate
13.17
per 100,000 people
Census Count
38,835
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Duffy
The Duffy surname is most commonly associated with people who identify as White (90.71%). The next largest groups are Black (4.25%) and Hispanic (2.25%).
Self-reported race and ethnicity from the 2010 U.S. Census Bureau surname tables. Some categories may be suppressed for privacy when sample sizes are small.
How Many People Are Named ... Duffy?
Pair the Duffy surname with a first name to estimate how many people share that full name in the United States.
Duffy Surname: Questions and Answers
How common is the last name Duffy?
Duffy is the #892 most common surname in the United States, with an estimated 44,237 people sharing this last name. It appears at a rate of 13.17 per 100,000 Americans.
What ethnicity is the surname Duffy?
The Duffy surname is most commonly associated with people who identify as White (90.71%). The next largest groups are Black (4.25%) and Hispanic (2.25%). This data comes from the 2010 U.S. Census Bureau surname tables, which include self-reported race and ethnicity breakdowns.
How many people named [First Name] Duffy are there?
We can estimate any first + last name combination. Popular examples: Michael Duffy, James Duffy, John Duffy. Search any combination on our homepage.
Where does this surname data come from?
Surname frequency data comes from the 2010 U.S. Census Bureau decennial surname tables. These list every surname appearing in the Census along with frequency rates and demographic breakdowns. Full methodology.
Search for a full name combination
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