How Many People Are Named James Kumai?
There are approximately 1 people named James Kumai 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 James with Census Bureau frequency data for the surname Kumai. 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 profileJames
Last Name
View full profileKumai
James: Popularity Over Time
Year-by-year SSA birth registrations for the first name James. The peak year was 1947 with 95,020 births. The average person named James today is 57 years old.
Ancestry of the Kumai Surname
Self-reported race and ethnicity breakdown for people with the surname Kumai, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "James" has an estimated frequency of 0.917% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Kumai" appears at a rate of 0.04 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 named James
Other people with the surname Kumai
James Kumai: Questions and Answers
How many people are named James Kumai?
We estimate approximately 1 people named James Kumai are alive in the United States today. The first name James is shared by 3,142,267 Americans, and the surname Kumai is shared by 137.
How rare is the name James Kumai?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 342,754,338 Americans. The first name James is very common and the surname Kumai is very rare.
Is James a male or female name?
James is predominantly male, with 99.5% of bearers being male and 0.5% female. It peaked in popularity in 1947 and the average bearer today is 57 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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