How Many People Are Named Diem Williams?
There are approximately 4 people named Diem Williams living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 85,688,585 Americans.
This estimate combines SSA birth records for the first name Diem with Census Bureau frequency data for the surname Williams. 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
4
1 in 85,688,585 Americans
Combination Rarity
Very Rare
First Name
View full profileDiem
Last Name
View full profileWilliams
Diem: Popularity Over Time
Year-by-year SSA birth registrations for the first name Diem. The peak year was 2016 with 63 births. The average person named Diem today is 17 years old.
Ancestry of the First Name Diem
In the 2020 Census, the first name Diem was most commonly recorded among people who identified as Asian and Pacific Islander (84.48%). The next largest recorded groups were White (9.42%) and Hispanic (2.21%).
These percentages describe the people who had the first name Diem 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 Diem rose or fell over time.
Ancestry of the Williams Surname
The surname Williams was most commonly recorded among people who identified as Black in the 2020 Census.
This is a self-reported race and ethnicity breakdown for people who had the surname Williams 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 "Diem" 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 522.38 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 Diem are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 4 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Diem
Other people with the surname Williams
Diem Williams: Questions and Answers
How many people are named Diem Williams?
We estimate approximately 4 people named Diem Williams are alive in the United States today. The first name Diem is shared by 785 Americans, and the surname Williams is shared by 1,790,492.
How rare is the name Diem Williams?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 85,688,585 Americans. The first name Diem is very rare and the surname Williams is very common.
Is Diem a male or female name?
Diem is predominantly female, with 11.1% of bearers being male and 88.9% female. It peaked in popularity in 2016 and the average bearer today is 17 years old.
What does the Census say about the first name Diem?
In the 2020 Census, the first name Diem was most commonly recorded among people who identified as Asian and Pacific Islander (84.48%). The next largest recorded groups were White (9.42%) and Hispanic (2.21%). 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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