How Many People Have the Last Name Osullivan?
11,818
people had the surname Osullivan in the 2010 US Census
About 1 in 24,938 people in the Census had this surname
Source: Census Bureau surname list
Surname Rank
#3,032
Of 162,253 surnames
Per 100,000 People
4.01
In 2010
Largest Group
93.8%
White
Change Since 2000
+8.6%
+939 people
👥 Race and Hispanic Origin
Most people with the surname Osullivan (93.8%) are non-Hispanic White. Among surnames where most people are non-Hispanic White, Osullivan ranks #2,270. The mix barely changed from 2000: no group's share moved by 2 points or more.
📈 Change Since 2000
Osullivan grew from 10,879 people in 2000 to 11,818 in 2010 (up 8.6%), and its rank rose from #3,054 to #3,032. The population grew faster, so its share still fell, from 4.03 to 4.01 people per 100,000.
| 2000 | 2010 | |
|---|---|---|
| People | 10,879 | 11,818 |
| Rank | #3,054 | #3,032 |
| Per 100,000 people | 4.03 | 4.01 |
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