How Many People Are Named Irby Williams?
There are approximately 2 people named Irby Williams living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 171,377,169 Americans.
This estimate combines SSA birth records for the first name Irby with Census Bureau frequency data for the surname Williams. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
2
1 in 171,377,169 Americans
Combination Rarity
Very Rare
First Name
View full profileIrby
Last Name
View full profileWilliams
Irby: Popularity Over Time
Year-by-year SSA birth registrations for the first name Irby. The peak year was 1916 with 39 births. The average person named Irby today is 73 years old.
Ancestry of the Williams Surname
Self-reported race and ethnicity breakdown for people with the surname Williams, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Irby" 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 "Williams" appears at a rate of 550.97 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 2 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Irby
Other people with the surname Williams
Irby Williams: Questions and Answers
How many people are named Irby Williams?
We estimate approximately 2 people named Irby Williams are alive in the United States today. The first name Irby is shared by 348 Americans, and the surname Williams is shared by 1,850,671.
How rare is the name Irby Williams?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 171,377,169 Americans. The first name Irby is very rare and the surname Williams is very common.
Is Irby a male or female name?
Irby is predominantly male, with 97.7% of bearers being male and 2.3% female. It peaked in popularity in 1916 and the average bearer today is 73 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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