FIRST NAME
Brennan
Brennan is the 566th most common male first name in the United States, recorded for 29,272 men and boys in the latest Census. It is also given to 1,951 women and girls.
AS A MALE NAME · #566 TODAY
2020 CENSUS
29,272
living · #566
BABIES NAMED BRENNAN BY BIRTH YEAR · 1916–2025
2025226
As a male name, Brennan peaked in 2009, when 1,464 babies were named Brennan (the #242 male name that year).
SOURCE: SOCIAL SECURITY ADMINISTRATION (US BIRTHS)
AS A FEMALE NAME · #4,598 TODAY
2020 CENSUS
1,951
living · #4,598
BABIES NAMED BRENNAN BY BIRTH YEAR · 1973–2025
202510
As a female name, Brennan peaked in 2007, when 100 babies were named Brennan (the #2039 female name that year).
SOURCE: SOCIAL SECURITY ADMINISTRATION (US BIRTHS)