Theo Angelopoulos
There are approximately 1 people named Theo Angelopoulos living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Theo with Census Bureau frequency data for the surname Angelopoulos. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
1
1 in 342,754,338
Named Theo
29K
Alive today
Named Angelopoulos
553
Alive today
US population
343M
Denominator
Estimated living: 29K
Rarity: Uncommon
Gender: Male
Peak year: 2023
Average age: 11
Top Census group: White (63.1%)
Estimated bearers: 553
Rarity: Very Rare
Census rank: #47,446
Per 100K: 0.16
Top ancestry: White (94.8%)
First name trend
Theo: popularity over time
Year-by-year SSA birth registrations for the first name Theo. The peak year was 2023 with 4,179 births. The average person named Theo today is 11 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Theo
Self-reported race and ethnicity breakdown for people with the first name Theo, from the 2020 US Census Bureau first-name tables. The largest published group is White at 63.1%.
The bar chart below shows how people with the first name Theo described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the name Theo at the time of the Census. A first name does not determine a person's race or ethnicity.
- White63.1% · 10,066
- Black or African American11.6% · 1,849
- Hispanic or Latino10.8% · 1,720
- Two or more races8.3% · 1,329
- Asian and Pacific Islander5.5% · 882
- American Indian and Alaska Native0.6% · 99
Ethnicity
Ancestry of the Angelopoulos surname
Self-reported race and ethnicity breakdown for people with the surname Angelopoulos, from the 2020 US Census Bureau. The largest group is White at 94.8%.
The bar chart below shows how people with the surname Angelopoulos described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the surname Angelopoulos at the time of the Census. A surname does not determine a person's race or ethnicity.
- White94.8% · 457
- Hispanic or Latino3.7% · 18
- Two or more races0.8% · 4
- Black or African American0.6% · 3
Methodology
How we calculated this
The first name Theo has a living-bearer frequency of 0.0086% of the US population, based on 29,344 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
Even though the Census Bureau now publishes first-name tables, we do not use that file as the main first-name input for this estimate. The latest first-name Census snapshot is from 2020, which makes it 6 years old today. Because Census first-name data is only released once every 10 years, SSA birth records plus CDC survival rates give a better current estimate of how many people are likely alive with the name Theo right now.
The surname Angelopoulos appears at a rate of 0.16 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0002%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Theo Angelopoulos. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Theo
FAQ
Theo Angelopoulos: questions and answers
How many people are named Theo Angelopoulos?
We estimate approximately 1 people in the United States share the full name Theo Angelopoulos. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0086%) with the surname frequency (0.16 per 100K) against the current US population.
How rare is the name Theo Angelopoulos?
We classify Theo Angelopoulos as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Theo a male or female name?
Theo is predominantly male. Out of 35,340 total SSA registrations, 90.1% were male and 9.9% were female. See the full Theo profile for detailed gender data.
Where does this data come from?
First-name data comes from the Social Security Administration's national baby name files (1880 to 2024). Surname data comes from the 2020 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.
How many people are named Theo Angelopoulos?
You can see how common the name Theo Angelopoulos is on our sister site HowManyOfMe.org — same data roots, lighter UI.