Keir Dullea
There are approximately 1 people named Keir Dullea 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 Keir with Census Bureau frequency data for the surname Dullea. 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 Keir
1.1K
Alive today
Named Dullea
523
Alive today
US population
343M
Denominator
Estimated living: 1.1K
Rarity: Rare
Gender: Male
Peak year: 1970
Average age: 36
Top Census group: White (51.2%)
Estimated bearers: 523
Rarity: Very Rare
Census rank: #49,748
Per 100K: 0.15
Top ancestry: White (96.3%)
First name trend
Keir: popularity over time
Year-by-year SSA birth registrations for the first name Keir. The peak year was 1970 with 74 births. The average person named Keir today is 36 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Keir
Self-reported race and ethnicity breakdown for people with the first name Keir, from the 2020 US Census Bureau first-name tables. The largest published group is White at 51.2%.
The bar chart below shows how people with the first name Keir 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 Keir at the time of the Census. A first name does not determine a person's race or ethnicity.
- White51.2% · 519
- Black or African American34.6% · 351
- Two or more races7.6% · 77
- Hispanic or Latino5.0% · 51
- Asian and Pacific Islander1.0% · 10
- American Indian and Alaska Native0.6% · 6
Ethnicity
Ancestry of the Dullea surname
Self-reported race and ethnicity breakdown for people with the surname Dullea, from the 2020 US Census Bureau. The largest group is White at 96.3%.
The bar chart below shows how people with the surname Dullea 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 Dullea at the time of the Census. A surname does not determine a person's race or ethnicity.
- White96.3% · 439
- Hispanic or Latino2.4% · 11
- Two or more races1.3% · 6
Methodology
How we calculated this
The first name Keir has a living-bearer frequency of 0.0003% of the US population, based on 1,052 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 Keir right now.
The surname Dullea appears at a rate of 0.15 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 Keir Dullea. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Keir Dullea: questions and answers
How many people are named Keir Dullea?
We estimate approximately 1 people in the United States share the full name Keir Dullea. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0003%) with the surname frequency (0.15 per 100K) against the current US population.
How rare is the name Keir Dullea?
We classify Keir Dullea as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Keir a male or female name?
Keir is predominantly male. Out of 1,110 total SSA registrations, 94.2% were male and 5.8% were female. See the full Keir 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 common is the name Keir Dullea?
Find out how many people are called Keir Dullea on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.