How Many People Are Named Isaac Mills?
There are approximately 144 people named Isaac Mills living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 2,380,238 Americans.
This estimate combines SSA birth records for the first name Isaac with Census Bureau frequency data for the surname Mills. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.
Estimated People with This Name
144
1 in 2,380,238 Americans
Combination Rarity
Uncommon
First Name
View full profileIsaac
Last Name
View full profileMills
Isaac: Popularity Over Time
Year-by-year SSA birth registrations for the first name Isaac. The peak year was 2007 with 10,287 births. The average person named Isaac today is 22 years old.
Ancestry of the First Name Isaac
In the 2020 Census, the first name Isaac was most commonly recorded among people who identified as White (44.71%). The next largest recorded groups were Hispanic (36.59%) and Black (9.81%).
These percentages describe the people who had the first name Isaac in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.
Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Isaac rose or fell over time.
Ancestry of the Mills Surname
The surname Mills was most commonly recorded among people who identified as White in the 2020 Census.
This is a self-reported race and ethnicity breakdown for people who had the surname Mills in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.
How we calculated this
The first name "Isaac" has an estimated frequency of 0.0865% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Mills" appears at a rate of 48.66 per 100,000 people in the 2020 U.S. Census.
We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Isaac are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 144 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Isaac
Other people with the surname Mills
Isaac Mills: Questions and Answers
How many people are named Isaac Mills?
We estimate approximately 144 people named Isaac Mills are alive in the United States today. The first name Isaac is shared by 296,602 Americans, and the surname Mills is shared by 166,789.
How rare is the name Isaac Mills?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 2,380,238 Americans. The first name Isaac is common and the surname Mills is common.
Is Isaac a male or female name?
Isaac is predominantly male, with 99.8% of bearers being male and 0.2% female. It peaked in popularity in 2007 and the average bearer today is 22 years old.
What does the Census say about the first name Isaac?
In the 2020 Census, the first name Isaac was most commonly recorded among people who identified as White (44.71%). The next largest recorded groups were Hispanic (36.59%) and Black (9.81%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.
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. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.
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