How Many People Are Named Cai Johnson?
There are approximately 11 people named Cai Johnson living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 31,159,485 Americans.
This estimate combines SSA birth records for the first name Cai with Census Bureau frequency data for the surname Johnson. 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
11
1 in 31,159,485 Americans
Combination Rarity
Rare
First Name
View full profileCai
Last Name
View full profileJohnson
Cai: Popularity Over Time
Year-by-year SSA birth registrations for the first name Cai. The peak year was 2022 with 131 births. The average person named Cai today is 12 years old.
Ancestry of the First Name Cai
In the 2020 Census, the first name Cai was most commonly recorded among people who identified as Asian and Pacific Islander (44.12%). The next largest recorded groups were Black (23.42%) and White (19.72%).
These percentages describe the people who had the first name Cai in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.
Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Cai rose or fell over time.
Ancestry of the Johnson Surname
The surname Johnson 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 Johnson 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.
How we calculated this
The first name "Cai" 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 621.69 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 Cai are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 11 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Cai
Other people with the surname Johnson
Cai Johnson: Questions and Answers
How many people are named Cai Johnson?
We estimate approximately 11 people named Cai Johnson are alive in the United States today. The first name Cai is shared by 1,845 Americans, and the surname Johnson is shared by 2,130,885.
How rare is the name Cai Johnson?
This name combination is classified as Rare, occurring at a rate of about 1 in 31,159,485 Americans. The first name Cai is rare and the surname Johnson is very common.
Is Cai a male or female name?
Cai is predominantly male, with 74.2% of bearers being male and 25.8% female. It peaked in popularity in 2022 and the average bearer today is 12 years old.
What does the Census say about the first name Cai?
In the 2020 Census, the first name Cai was most commonly recorded among people who identified as Asian and Pacific Islander (44.12%). The next largest recorded groups were Black (23.42%) and White (19.72%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.
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
How Many of Me