Finnian Kirby
There are approximately 1 people named Finnian Kirby 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 Finnian with Census Bureau frequency data for the surname Kirby. 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 Finnian
3.1K
Alive today
Named Kirby
59K
Alive today
US population
343M
Denominator
Estimated living: 3.1K
Rarity: Rare
Gender: Male
Peak year: 2016
Average age: 13
Top Census group: White (89.6%)
Estimated bearers: 59K
Rarity: Uncommon
Census rank: #641
Per 100K: 17.27
Top ancestry: White (83.0%)
First name trend
Finnian: popularity over time
Year-by-year SSA birth registrations for the first name Finnian. The peak year was 2016 with 187 births. The average person named Finnian today is 13 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Finnian
Self-reported race and ethnicity breakdown for people with the first name Finnian, from the 2020 US Census Bureau first-name tables. The largest published group is White at 89.6%.
The bar chart below shows how people with the first name Finnian 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 Finnian at the time of the Census. A first name does not determine a person's race or ethnicity.
- White89.6% · 2,152
- Two or more races5.3% · 127
- Hispanic or Latino3.8% · 92
- Black or African American0.7% · 17
- Asian and Pacific Islander0.6% · 14
Ethnicity
Ancestry of the Kirby surname
Self-reported race and ethnicity breakdown for people with the surname Kirby, from the 2020 US Census Bureau. The largest group is White at 83.0%.
The bar chart below shows how people with the surname Kirby 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 Kirby at the time of the Census. A surname does not determine a person's race or ethnicity.
- White83.0% · 42,851
- Black or African American8.9% · 4,593
- Two or more races3.9% · 2,035
- Hispanic or Latino2.9% · 1,483
- American Indian and Alaska Native0.7% · 336
- Asian and Pacific Islander0.6% · 322
Methodology
How we calculated this
The first name Finnian has a living-bearer frequency of 0.0009% of the US population, based on 3,058 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 Finnian right now.
The surname Kirby appears at a rate of 17.27 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0173%.
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 Finnian Kirby. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Finnian Kirby: questions and answers
How many people are named Finnian Kirby?
We estimate approximately 1 people in the United States share the full name Finnian Kirby. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0009%) with the surname frequency (17.27 per 100K) against the current US population.
How rare is the name Finnian Kirby?
We classify Finnian Kirby as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Finnian a male or female name?
Finnian is predominantly male. Out of 3,086 total SSA registrations, 100.0% were male and 0.0% were female. See the full Finnian 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 have the full name Finnian Kirby?
Our sister site HowManyOfMe.org answers how common the name Finnian Kirby is at a glance, with the living-bearer count up front.