How Many People Are Named Robert Kirby?
There are approximately 510 people named Robert Kirby living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 672,067 Americans.
This estimate combines SSA birth records for the first name Robert 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
510
1 in 672,067 Americans
Combination Rarity
Uncommon
First Name
View full profileRobert
Last Name
View full profileKirby
Robert: Popularity Over Time
Year-by-year SSA birth registrations for the first name Robert. The peak year was 1947 with 91,891 births. The average person named Robert today is 60 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 "Robert" has an estimated frequency of 0.817% 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 510 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Robert
Robert Kirby: Questions and Answers
How many people are named Robert Kirby?
We estimate approximately 510 people named Robert Kirby are alive in the United States today. The first name Robert is shared by 2,799,566 Americans, and the surname Kirby is shared by 61,233.
How rare is the name Robert Kirby?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 672,067 Americans. The first name Robert is very common and the surname Kirby is uncommon.
Is Robert a male or female name?
Robert 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 60 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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