How Many People Have the Last Name Brennan?
people had the surname Brennan in the 2010 US Census
About 1 in 5,992 people in the Census had this surname
Source: Census Bureau surname list
Surname Rank
Of 162,253 surnames
Per 100,000 People
In 2010
Largest Group
White
Change Since 2000
+942 people
👥 Race and Hispanic Origin
Most people with the surname Brennan (94.6%) are non-Hispanic White. Among surnames where most people are non-Hispanic White, Brennan ranks #510. The mix barely changed from 2000: no group's share moved by 2 points or more.
📈 Change Since 2000
Brennan grew from 48,296 people in 2000 to 49,238 in 2010 (up 2%), and its rank fell from #642 to #701. The population grew faster, so its share still fell, from 17.9 to 16.69 people per 100,000.
| 2000 | 2010 | |
|---|---|---|
| People | 48,296 | 49,238 |
| Rank | #642 | #701 |
| Per 100,000 people | 17.9 | 16.69 |
🏆 Surnames Ranked Near Brennan
🔊 Surnames That Sound Alike
Same Soundex code as Brennan: B655
👤 Brennan as a First Name
Brennan is a first name too: about 34,612 people alive in the US today have it as a first name, an estimate from Social Security birth records.
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