How Many People Are Named Declan Brown?

There are approximately 272 people named Declan Brown living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,260,126 Americans.

This estimate combines SSA birth records for the first name Declan with Census Bureau frequency data for the surname Brown. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.

Estimated People with This Name

272

1 in 1,260,126 Americans

Combination Rarity

Uncommon

Very Rare Very Common

First Name

Declan

Last Name

Brown

Est. Bearers 1,636,337

Census Rank #4

Per 100K 487.16

Rarity Very Common

Declan: Popularity Over Time

Year-by-year SSA birth registrations for the first name Declan. The peak year was 2019 with 4,007 births. The average person named Declan today is 11 years old.

Male

Female

Ancestry of the Brown Surname

Self-reported race and ethnicity breakdown for people with the surname Brown, from the 2010 U.S. Census Bureau.

White

57.95%

Black

35.60%

Hispanic

2.52%

Asian/Pacific Islander

0.51%

American Indian/Alaska Native

0.87%

Two or More Races

2.55%

How we calculated this

The first name "Declan" has an estimated frequency of 0.0163% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.

The surname "Brown" appears at a rate of 487.16 per 100,000 people in the 2010 U.S. Census.

Multiplying these frequencies against the U.S. population of ~343 million gives 272 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Declan

Declan Smith Declan Johnson Declan Williams Declan Jones Declan Garcia Declan Lowney

Other people with the surname Brown

Michael Brown James Brown John Brown David Brown Robert Brown William Brown Christopher Brown Joseph Brown

Declan Brown: Questions and Answers

How many people are named Declan Brown?

We estimate approximately 272 people named Declan Brown are alive in the United States today. The first name Declan is shared by 55,872 Americans, and the surname Brown is shared by 1,636,337.

How rare is the name Declan Brown?

This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,260,126 Americans. The first name Declan is uncommon and the surname Brown is very common.

Is Declan a male or female name?

Declan is predominantly male, with 99.3% of bearers being male and 0.7% female. It peaked in popularity in 2019 and the average bearer today is 11 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.

How Many of Me

howmanyofme.org

There are 272 people with the name

Declan Brown

in the United States

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