Patrick Duffy
There are approximately 75 people named Patrick Duffy living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 4,570,058 Americans.
This estimate combines SSA birth records for the first name Patrick with Census Bureau frequency data for the surname Duffy. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
75
1 in 4,570,058
Named Patrick
571K
Alive today
Named Duffy
45K
Alive today
US population
343M
Denominator
Estimated living: 571K
Rarity: Very Common
Gender: Male
Peak year: 1964
Average age: 48
Estimated bearers: 45K
Rarity: Uncommon
Census rank: #892
Per 100K: 13.17
Top ancestry: White (90.7%)
First name trend
Patrick: popularity over time
Year-by-year SSA birth registrations for the first name Patrick. The peak year was 1964 with 14,752 births. The average person named Patrick today is 48 years old.
Babies born per year
Ethnicity
Ancestry of the Duffy surname
Self-reported race and ethnicity breakdown for people with the surname Duffy, from the 2010 US Census Bureau. The largest group is White at 90.7%.
- White90.7%
- Black or African American4.3%
- Hispanic or Latino2.3%
- Two or more races1.6%
- Asian and Pacific Islander0.7%
- American Indian and Alaska Native0.5%
Methodology
How we calculated this
The first name Patrick has a living-bearer frequency of 0.1666% of the US population, based on 571,090 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Duffy appears at a rate of 13.17 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0132%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 75 people with the full name Patrick Duffy. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Patrick
Related
Other people with the surname Duffy
FAQ
Patrick Duffy: questions and answers
How many people are named Patrick Duffy?
We estimate approximately 75 people in the United States share the full name Patrick Duffy. That works out to about 1 in 4,570,058 Americans. This is calculated by combining the first-name frequency (0.1666%) with the surname frequency (13.17 per 100K) against the current US population.
How rare is the name Patrick Duffy?
We classify Patrick Duffy as "Very Rare". About 1 in 4,570,058 Americans share this exact first and last name combination.
Is Patrick a male or female name?
Patrick is predominantly male. Out of 687,932 total SSA registrations, 99.6% were male and 0.4% were female. See the full Patrick 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 2010 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.