Mabel Killoy
There are approximately 1 people named Mabel Killoy 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 Mabel with Census Bureau frequency data for the surname Killoy. 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 Mabel
19K
Alive today
Named Killoy
151
Alive today
US population
343M
Denominator
Estimated living: 19K
Rarity: Uncommon
Gender: Female
Peak year: 1915
Average age: 38
Top Census group: White (50.5%)
Estimated bearers: 151
Rarity: Very Rare
Census rank: #133,220
Per 100K: 0.04
Top ancestry: White (99.2%)
First name trend
Mabel: popularity over time
Year-by-year SSA birth registrations for the first name Mabel. The peak year was 1915 with 3,696 births. The average person named Mabel today is 38 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Mabel
Self-reported race and ethnicity breakdown for people with the first name Mabel, from the 2020 US Census Bureau first-name tables. The largest published group is White at 50.5%.
The bar chart below shows how people with the first name Mabel 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 Mabel at the time of the Census. A first name does not determine a person's race or ethnicity.
- White50.5% · 11,850
- Hispanic or Latino27.3% · 6,406
- Black or African American12.2% · 2,854
- Asian and Pacific Islander6.6% · 1,553
- Two or more races2.3% · 547
- American Indian and Alaska Native1.1% · 264
Ethnicity
Ancestry of the Killoy surname
Self-reported race and ethnicity breakdown for people with the surname Killoy, from the 2020 US Census Bureau. The largest group is White at 99.2%.
The bar chart below shows how people with the surname Killoy 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 Killoy at the time of the Census. A surname does not determine a person's race or ethnicity.
- White99.2% · 131
- Two or more races0.8% · 1
Methodology
How we calculated this
The first name Mabel has a living-bearer frequency of 0.0056% of the US population, based on 19,274 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 Mabel right now.
The surname Killoy appears at a rate of 0.04 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0000%.
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 Mabel Killoy. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Mabel
FAQ
Mabel Killoy: questions and answers
How many people are named Mabel Killoy?
We estimate approximately 1 people in the United States share the full name Mabel Killoy. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0056%) with the surname frequency (0.04 per 100K) against the current US population.
How rare is the name Mabel Killoy?
We classify Mabel Killoy as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Mabel a male or female name?
Mabel is predominantly female. Out of 141,163 total SSA registrations, 0.3% were male and 99.7% were female. See the full Mabel 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 Americans are named Mabel Killoy?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.