Peter Gallagher
There are approximately 97 people named Peter Gallagher living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 3,533,550 Americans.
This estimate combines SSA birth records for the first name Peter with Census Bureau frequency data for the surname Gallagher. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
97
1 in 3,533,550
Named Peter
411K
Alive today
Named Gallagher
81K
Alive today
US population
343M
Denominator
Estimated living: 411K
Rarity: Common
Gender: Male
Peak year: 1957
Average age: 53
Estimated bearers: 81K
Rarity: Uncommon
Census rank: #479
Per 100K: 23.67
Top ancestry: White (94.6%)
First name trend
Peter: popularity over time
Year-by-year SSA birth registrations for the first name Peter. The peak year was 1957 with 11,629 births. The average person named Peter today is 53 years old.
Babies born per year
Ethnicity
Ancestry of the Gallagher surname
Self-reported race and ethnicity breakdown for people with the surname Gallagher, from the 2010 US Census Bureau. The largest group is White at 94.6%.
- White94.6%
- Hispanic or Latino2.5%
- Two or more races1.3%
- Black or African American0.7%
- Asian and Pacific Islander0.6%
- American Indian and Alaska Native0.3%
Methodology
How we calculated this
The first name Peter has a living-bearer frequency of 0.1198% of the US population, based on 410,601 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Gallagher appears at a rate of 23.67 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0237%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 97 people with the full name Peter Gallagher. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Peter
FAQ
Peter Gallagher: questions and answers
How many people are named Peter Gallagher?
We estimate approximately 97 people in the United States share the full name Peter Gallagher. That works out to about 1 in 3,533,550 Americans. This is calculated by combining the first-name frequency (0.1198%) with the surname frequency (23.67 per 100K) against the current US population.
How rare is the name Peter Gallagher?
We classify Peter Gallagher as "Very Rare". About 1 in 3,533,550 Americans share this exact first and last name combination.
Is Peter a male or female name?
Peter is predominantly male. Out of 589,576 total SSA registrations, 99.7% were male and 0.3% were female. See the full Peter 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.