How Many People Are Named Colby Brown?

There are approximately 273 people named Colby Brown living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,255,510 Americans.

This estimate combines SSA birth records for the first name Colby 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

273

1 in 1,255,510 Americans

Combination Rarity

Uncommon

Very Rare Very Common

First Name

Colby

Last Name

Brown

Est. Bearers 1,636,337

Census Rank #4

Per 100K 487.16

Rarity Very Common

Colby: Popularity Over Time

Year-by-year SSA birth registrations for the first name Colby. The peak year was 2001 with 3,979 births. The average person named Colby today is 27 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 "Colby" 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 273 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Colby

Colby Smith Colby Johnson

Other people with the surname Brown

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

Colby Brown: Questions and Answers

How many people are named Colby Brown?

We estimate approximately 273 people named Colby Brown are alive in the United States today. The first name Colby is shared by 55,946 Americans, and the surname Brown is shared by 1,636,337.

How rare is the name Colby Brown?

This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,255,510 Americans. The first name Colby is uncommon and the surname Brown is very common.

Is Colby a male or female name?

Colby is predominantly male, with 92.8% of bearers being male and 7.2% female. It peaked in popularity in 2001 and the average bearer today is 27 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 273 people with the name

Colby Brown

in the United States

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