How Many People Are Named John Kirby?
There are approximately 536 people named John Kirby living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 639,467 Americans.
This estimate combines SSA birth records for the first name John with Census Bureau frequency data for the surname Kirby. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
536
1 in 639,467 Americans
Combination Rarity
Uncommon
First Name
View full profileJohn
Last Name
View full profileKirby
John: Popularity Over Time
Year-by-year SSA birth registrations for the first name John. The peak year was 1947 with 88,524 births. The average person named John today is 57 years old.
Ancestry of the Kirby Surname
Self-reported race and ethnicity breakdown for people with the surname Kirby, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "John" has an estimated frequency of 0.858% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Kirby" appears at a rate of 18.23 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 536 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named John
Other people with the surname Kirby
John Kirby: Questions and Answers
How many people are named John Kirby?
We estimate approximately 536 people named John Kirby are alive in the United States today. The first name John is shared by 2,941,241 Americans, and the surname Kirby is shared by 61,233.
How rare is the name John Kirby?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 639,467 Americans. The first name John is very common and the surname Kirby is uncommon.
Is John a male or female name?
John is predominantly male, with 99.6% of bearers being male and 0.4% 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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