Perpetua Mckay
There are approximately 1 people named Perpetua Mckay 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 Perpetua with Census Bureau frequency data for the surname Mckay. 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 Perpetua
176
Alive today
Named Mckay
42K
Alive today
US population
343M
Denominator
Estimated living: 176
Rarity: Very Rare
Gender: Female
Peak year: 2022
Average age: 8
Top Census group: Asian and Pacific Islander (32.6%)
Estimated bearers: 42K
Rarity: Uncommon
Census rank: #926
Per 100K: 12.36
Top ancestry: White (77.3%)
First name trend
Perpetua: popularity over time
Year-by-year SSA birth registrations for the first name Perpetua. The peak year was 2022 with 22 births. The average person named Perpetua today is 8 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Perpetua
Self-reported race and ethnicity breakdown for people with the first name Perpetua, from the 2020 US Census Bureau first-name tables. The largest published group is Asian and Pacific Islander at 32.6%.
The bar chart below shows how people with the first name Perpetua 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 Perpetua at the time of the Census. A first name does not determine a person's race or ethnicity.
- Asian and Pacific Islander32.6% · 184
- Black or African American31.3% · 177
- White23.4% · 132
- Hispanic or Latino10.6% · 60
- Two or more races2.1% · 12
Ethnicity
Ancestry of the Mckay surname
Self-reported race and ethnicity breakdown for people with the surname Mckay, from the 2020 US Census Bureau. The largest group is White at 77.3%.
The bar chart below shows how people with the surname Mckay 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 Mckay at the time of the Census. A surname does not determine a person's race or ethnicity.
- White77.3% · 28,551
- Black or African American13.0% · 4,802
- Two or more races4.0% · 1,495
- Hispanic or Latino3.6% · 1,334
- American Indian and Alaska Native1.1% · 402
- Asian and Pacific Islander1.0% · 353
Methodology
How we calculated this
The first name Perpetua has a living-bearer frequency of 0.0001% of the US population, based on 176 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 Perpetua right now.
The surname Mckay appears at a rate of 12.36 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0124%.
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 Perpetua Mckay. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people with the surname Mckay
FAQ
Perpetua Mckay: questions and answers
How many people are named Perpetua Mckay?
We estimate approximately 1 people in the United States share the full name Perpetua Mckay. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0001%) with the surname frequency (12.36 per 100K) against the current US population.
How rare is the name Perpetua Mckay?
We classify Perpetua Mckay as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Perpetua a male or female name?
Perpetua is predominantly female. Out of 177 total SSA registrations, 0.0% were male and 100.0% were female. See the full Perpetua 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 called Perpetua Mckay?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.