Maureen Osullivan
There are approximately 4 people named Maureen Osullivan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 85,688,585 Americans.
This estimate combines SSA birth records for the first name Maureen with Census Bureau frequency data for the surname Osullivan. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
4
1 in 85,688,585
Named Maureen
96K
Alive today
Named Osullivan
14K
Alive today
US population
343M
Denominator
Estimated living: 96K
Rarity: Uncommon
Gender: Female
Peak year: 1957
Average age: 64
Top Census group: White (90.9%)
Estimated bearers: 14K
Rarity: Uncommon
Census rank: #2,941
Per 100K: 4.01
Top ancestry: White (91.1%)
First name trend
Maureen: popularity over time
Year-by-year SSA birth registrations for the first name Maureen. The peak year was 1957 with 4,605 births. The average person named Maureen today is 64 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Maureen
Self-reported race and ethnicity breakdown for people with the first name Maureen, from the 2020 US Census Bureau first-name tables. The largest published group is White at 90.9%.
The bar chart below shows how people with the first name Maureen 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 Maureen at the time of the Census. A first name does not determine a person's race or ethnicity.
- White90.9% · 114,144
- Black or African American4.1% · 5,115
- Hispanic or Latino2.0% · 2,525
- Asian and Pacific Islander1.6% · 2,028
- Two or more races1.2% · 1,493
- American Indian and Alaska Native0.2% · 294
Ethnicity
Ancestry of the Osullivan surname
Self-reported race and ethnicity breakdown for people with the surname Osullivan, from the 2020 US Census Bureau. The largest group is White at 91.1%.
The bar chart below shows how people with the surname Osullivan 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 Osullivan at the time of the Census. A surname does not determine a person's race or ethnicity.
- White91.1% · 10,903
- Hispanic or Latino3.4% · 409
- Two or more races2.8% · 340
- Black or African American1.7% · 201
- Asian and Pacific Islander0.9% · 107
- American Indian and Alaska Native0.1% · 11
Methodology
How we calculated this
The first name Maureen has a living-bearer frequency of 0.0279% of the US population, based on 95,565 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 Maureen right now.
The surname Osullivan appears at a rate of 4.01 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0040%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 4 people with the full name Maureen Osullivan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Maureen
Related
Other people with the surname Osullivan
FAQ
Maureen Osullivan: questions and answers
How many people are named Maureen Osullivan?
We estimate approximately 4 people in the United States share the full name Maureen Osullivan. That works out to about 1 in 85,688,585 Americans. This is calculated by combining the first-name frequency (0.0279%) with the surname frequency (4.01 per 100K) against the current US population.
How rare is the name Maureen Osullivan?
We classify Maureen Osullivan as "Very Rare". About 1 in 85,688,585 Americans share this exact first and last name combination.
Is Maureen a male or female name?
Maureen is predominantly female. Out of 144,573 total SSA registrations, 0.2% were male and 99.8% were female. See the full Maureen 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 Maureen Osullivan?
Want to know how common the name Maureen Osullivan is? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.