LAST NAME · 2020 CENSUS
Brennan
Brennan is the 697th most common last name in the United States. In the 2020 Census, 47,806 people carried it — about 16.0 of every 100,000 people. Most people named Brennan are White.
WHO CARRIES THIS NAME · 2020
White91.7%
Hispanic3.4%
Multiracial2.9%
Asian American0.9%
Black0.9%
Native American0.2%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#744
39,794
2000
#642
48,296
2010
#701
49,238
2020
#697
47,806