LAST NAME · 2020 CENSUS
Osullivan
Osullivan is the 2,941st most common last name in the United States. In the 2020 Census, 11,971 people carried it — about 4.0 of every 100,000 people. Most people named Osullivan are White.
WHO CARRIES THIS NAME · 2020
White91.1%
Hispanic3.4%
Multiracial2.8%
Black1.7%
Asian American0.9%
Native American0.1%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#3,853
7,461
2000
#3,054
10,879
2010
#3,032
11,818
2020
#2,941
11,971