Fionnula Flanagan
There are approximately 1 people named Fionnula Flanagan 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 Fionnula with Census Bureau frequency data for the surname Flanagan. 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 Fionnula
5
Alive today
Named Flanagan
34K
Alive today
US population
343M
Denominator
Estimated living: 5
Rarity: Very Rare
Gender: Female
Peak year: 2016
Average age: 10
Estimated bearers: 34K
Rarity: Uncommon
Census rank: #1,166
Per 100K: 9.91
Top ancestry: White (86.3%)
First name trend
Fionnula: popularity over time
Year-by-year SSA birth registrations for the first name Fionnula. The peak year was 2016 with 5 births. The average person named Fionnula today is 10 years old.
Babies born per year
Ethnicity
Ancestry of the Flanagan surname
Self-reported race and ethnicity breakdown for people with the surname Flanagan, from the 2020 US Census Bureau. The largest group is White at 86.3%.
The bar chart below shows how people with the surname Flanagan 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 Flanagan at the time of the Census. A surname does not determine a person's race or ethnicity.
- White86.3% · 25,546
- Black or African American6.3% · 1,869
- Hispanic or Latino3.3% · 988
- Two or more races3.0% · 880
- Asian and Pacific Islander0.7% · 215
- American Indian and Alaska Native0.4% · 111
Methodology
How we calculated this
The first name Fionnula has a living-bearer frequency of 0.0000% of the US population, based on 5 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Flanagan appears at a rate of 9.91 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0099%.
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 Fionnula Flanagan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Fionnula Flanagan: questions and answers
How many people are named Fionnula Flanagan?
We estimate approximately 1 people in the United States share the full name Fionnula Flanagan. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0000%) with the surname frequency (9.91 per 100K) against the current US population.
How rare is the name Fionnula Flanagan?
We classify Fionnula Flanagan as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Fionnula a male or female name?
Fionnula is predominantly female. Out of 5 total SSA registrations, 0.0% were male and 100.0% were female. See the full Fionnula 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 Fionnula Flanagan?
Want to know how common the name Fionnula Flanagan is? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.