How Many People Are Named Issac Williams?
There are approximately 120 people named Issac Williams living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 2,856,286 Americans.
This estimate combines SSA birth records for the first name Issac 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
120
1 in 2,856,286 Americans
Combination Rarity
Uncommon
First Name
View full profileIssac
Last Name
View full profileWilliams
Issac: Popularity Over Time
Year-by-year SSA birth registrations for the first name Issac. The peak year was 2008 with 820 births. The average person named Issac today is 26 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 "Issac" 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 120 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Issac
Other people with the surname Williams
Issac Williams: Questions and Answers
How many people are named Issac Williams?
We estimate approximately 120 people named Issac Williams are alive in the United States today. The first name Issac is shared by 21,735 Americans, and the surname Williams is shared by 1,850,671.
How rare is the name Issac Williams?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 2,856,286 Americans. The first name Issac is uncommon and the surname Williams is very common.
Is Issac a male or female name?
Issac is predominantly male, with 99.9% of bearers being male and 0.1% female. It peaked in popularity in 2008 and the average bearer today is 26 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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