How Many People Are Named Castian Johnson?
There are approximately 1 people named Castian Johnson 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 Castian with Census Bureau frequency data for the surname Johnson. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
1
1 in 342,754,338 Americans
Combination Rarity
Very Rare
First Name
View full profileCastian
Last Name
View full profileJohnson
Castian: Popularity Over Time
Year-by-year SSA birth registrations for the first name Castian. The peak year was 2024 with 7 births. The average person named Castian today is 2 years old.
Ancestry of the Johnson Surname
Self-reported race and ethnicity breakdown for people with the surname Johnson, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Castian" 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 "Johnson" appears at a rate of 655.24 per 100,000 people in the 2010 U.S. Census.
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 with the surname Johnson
Castian Johnson: Questions and Answers
How many people are named Castian Johnson?
We estimate approximately 1 people named Castian Johnson are alive in the United States today. The first name Castian is shared by 12 Americans, and the surname Johnson is shared by 2,245,864.
How rare is the name Castian Johnson?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 342,754,338 Americans. The first name Castian is very rare and the surname Johnson is very common.
Is Castian a male or female name?
Castian is predominantly male, with 100.0% of bearers being male and 0.0% female. It peaked in popularity in 2024 and the average bearer today is 2 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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