How Many People Are Named Isobel Brown?
There are approximately 12 people named Isobel Brown living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 28,562,862 Americans.
This estimate combines SSA birth records for the first name Isobel 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
12
1 in 28,562,862 Americans
Combination Rarity
Rare
First Name
View full profileIsobel
Last Name
View full profileBrown
Isobel: Popularity Over Time
Year-by-year SSA birth registrations for the first name Isobel. The peak year was 2016 with 129 births. The average person named Isobel today is 18 years old.
Ancestry of the Brown Surname
Self-reported race and ethnicity breakdown for people with the surname Brown, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Isobel" 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 487.16 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 12 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Isobel
Other people with the surname Brown
Isobel Brown: Questions and Answers
How many people are named Isobel Brown?
We estimate approximately 12 people named Isobel Brown are alive in the United States today. The first name Isobel is shared by 2,517 Americans, and the surname Brown is shared by 1,636,337.
How rare is the name Isobel Brown?
This name combination is classified as Rare, occurring at a rate of about 1 in 28,562,862 Americans. The first name Isobel is rare and the surname Brown is very common.
Is Isobel a male or female name?
Isobel is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 2016 and the average bearer today is 18 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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