Pat Sullivan
There are approximately 21 people named Pat Sullivan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 16,321,635 Americans.
This estimate combines SSA birth records for the first name Pat with Census Bureau frequency data for the surname Sullivan. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
21
1 in 16,321,635
Named Pat
30K
Alive today
Named Sullivan
244K
Alive today
US population
343M
Denominator
Estimated living: 30K
Rarity: Uncommon
Gender: Unisex
Peak year: 1947
Average age: 73
Top Census group: White (84.0%)
Estimated bearers: 244K
Rarity: Common
Census rank: #107
Per 100K: 71.16
Top ancestry: White (85.1%)
First name trend
Pat: popularity over time
Year-by-year SSA birth registrations for the first name Pat. The peak year was 1947 with 2,543 births. The average person named Pat today is 73 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Pat
Self-reported race and ethnicity breakdown for people with the first name Pat, from the 2020 US Census Bureau first-name tables. The largest published group is White at 84.0%.
The bar chart below shows how people with the first name Pat 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 Pat at the time of the Census. A first name does not determine a person's race or ethnicity.
- White84.0% · 34,247
- Black or African American5.4% · 2,222
- Hispanic or Latino4.6% · 1,875
- Asian and Pacific Islander3.5% · 1,420
- Two or more races1.7% · 711
- American Indian and Alaska Native0.7% · 303
Ethnicity
Ancestry of the Sullivan surname
Self-reported race and ethnicity breakdown for people with the surname Sullivan, from the 2020 US Census Bureau. The largest group is White at 85.1%.
The bar chart below shows how people with the surname Sullivan 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 Sullivan at the time of the Census. A surname does not determine a person's race or ethnicity.
- White85.1% · 181,015
- Black or African American6.9% · 14,770
- Hispanic or Latino3.4% · 7,307
- Two or more races3.3% · 7,020
- Asian and Pacific Islander0.7% · 1,491
- American Indian and Alaska Native0.5% · 1,098
Methodology
How we calculated this
The first name Pat has a living-bearer frequency of 0.0087% of the US population, based on 29,680 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 Pat right now.
The surname Sullivan appears at a rate of 71.16 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0712%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 21 people with the full name Pat Sullivan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Pat
Related
Other people with the surname Sullivan
FAQ
Pat Sullivan: questions and answers
How many people are named Pat Sullivan?
We estimate approximately 21 people in the United States share the full name Pat Sullivan. That works out to about 1 in 16,321,635 Americans. This is calculated by combining the first-name frequency (0.0087%) with the surname frequency (71.16 per 100K) against the current US population.
How rare is the name Pat Sullivan?
We classify Pat Sullivan as "Very Rare". About 1 in 16,321,635 Americans share this exact first and last name combination.
Is Pat a male or female name?
Pat is predominantly unisex. Out of 66,854 total SSA registrations, 40.0% were male and 60.0% were female. See the full Pat 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 Pat Sullivan?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.