How Common Is the Surname Osullivan?
The surname Osullivan is the #3,032 most common last name in the United States, with an estimated 13,469 bearers. That's about 1 in 24,938 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Osullivan 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 Osullivan.
Estimated Americans with this Surname
13,469
About 1 in 24,938 people in the U.S.
Census Rank
#3,032
Frequency Rate
4.01
per 100,000 people
Census Count
11,818
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Osullivan
The Osullivan surname is most commonly associated with people who identify as White (93.83%). The next largest groups are Hispanic (2.26%) and Black (1.72%).
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 ... Osullivan?
Pair the Osullivan surname with a first name to estimate how many people share that full name in the United States.
Osullivan Surname: Questions and Answers
How common is the last name Osullivan?
Osullivan is the #3,032 most common surname in the United States, with an estimated 13,469 people sharing this last name. It appears at a rate of 4.01 per 100,000 Americans.
What ethnicity is the surname Osullivan?
The Osullivan surname is most commonly associated with people who identify as White (93.83%). The next largest groups are Hispanic (2.26%) and Black (1.72%). 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] Osullivan are there?
We can estimate any first + last name combination. Popular examples: Michael Osullivan, James Osullivan, John Osullivan. 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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