How Many People Are Named Decca Brown?

There are approximately 1 people named Decca Brown living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.

This estimate combines SSA birth records for the first name Decca with Census Bureau frequency data for the surname Brown. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.

Estimated People with This Name

1 in 342,754,338 Americans

Combination Rarity

Very Rare

Very Rare Very Common

First Name

Decca

Last Name

Brown

Est. Bearers 1,589,457

Census Rank #4

Per 100K 463.73

Rarity Very Common

Decca: Popularity Over Time

Year-by-year SSA birth registrations for the first name Decca. The peak year was 1956 with 5 births. The average person named Decca today is 63 years old.

Ancestry of the Brown Surname

The surname Brown was most commonly recorded among people who identified as White in the 2020 Census.

This is a self-reported race and ethnicity breakdown for people who had the surname Brown in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.

White

55.43%

Black

34.68%

Hispanic

3.55%

Asian/Pacific Islander

0.66%

American Indian/Alaska Native

0.85%

Two or More Races

4.83%

How we calculated this

The first name "Decca" has an estimated frequency of < 0.0001% 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 463.73 per 100,000 people in the 2020 U.S. Census.

We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Decca are likely to be alive now.

Multiplying these frequencies against the U.S. population of ~343 million gives 1 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Decca

Decca Garcia Decca Smith Decca Jones Decca Williams Decca Johnson

Other people with the surname Brown

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

Decca Brown: Questions and Answers

How many people are named Decca Brown?

We estimate approximately 1 people named Decca Brown are alive in the United States today. The first name Decca is shared by 4 Americans, and the surname Brown is shared by 1,589,457.

How rare is the name Decca Brown?

This name combination is classified as Very Rare, occurring at a rate of about 1 in 342,754,338 Americans. The first name Decca is very rare and the surname Brown is very common.

Is Decca a male or female name?

Decca is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 1956 and the average bearer today is 63 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. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.

Try another name