How Many People Are Named Brett Sullivan?
There are approximately 114 people named Brett Sullivan living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 3,006,617 Americans.
This estimate combines SSA birth records for the first name Brett with Census Bureau frequency data for the surname Sullivan. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
114
1 in 3,006,617 Americans
Combination Rarity
Uncommon
First Name
View full profileBrett
Last Name
View full profileSullivan
Brett: Popularity Over Time
Year-by-year SSA birth registrations for the first name Brett. The peak year was 1986 with 4,906 births. The average person named Brett today is 42 years old.
Ancestry of the Sullivan Surname
Self-reported race and ethnicity breakdown for people with the surname Sullivan, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Brett" has an estimated frequency of 0.0442% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Sullivan" appears at a rate of 74.92 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 114 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Brett
Other people with the surname Sullivan
Brett Sullivan: Questions and Answers
How many people are named Brett Sullivan?
We estimate approximately 114 people named Brett Sullivan are alive in the United States today. The first name Brett is shared by 151,534 Americans, and the surname Sullivan is shared by 251,651.
How rare is the name Brett Sullivan?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 3,006,617 Americans. The first name Brett is common and the surname Sullivan is common.
Is Brett a male or female name?
Brett is predominantly male, with 97.9% of bearers being male and 2.1% female. It peaked in popularity in 1986 and the average bearer today is 42 years old.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. Surname data comes from the 2010 U.S. Census Bureau. Full methodology.
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