Dennis Dugan
There are approximately 32 people named Dennis Dugan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 10,711,073 Americans.
This estimate combines SSA birth records for the first name Dennis with Census Bureau frequency data for the surname Dugan. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
32
1 in 10,711,073
Named Dennis
442K
Alive today
Named Dugan
25K
Alive today
US population
343M
Denominator
Estimated living: 442K
Rarity: Common
Gender: Male
Peak year: 1952
Average age: 64
Estimated bearers: 25K
Rarity: Uncommon
Census rank: #1,679
Per 100K: 7.27
Top ancestry: White (91.1%)
First name trend
Dennis: popularity over time
Year-by-year SSA birth registrations for the first name Dennis. The peak year was 1952 with 24,605 births. The average person named Dennis today is 64 years old.
Babies born per year
Ethnicity
Ancestry of the Dugan surname
Self-reported race and ethnicity breakdown for people with the surname Dugan, from the 2010 US Census Bureau. The largest group is White at 91.1%.
- White91.1%
- Black or African American3.2%
- Hispanic or Latino2.7%
- Two or more races1.5%
- Asian and Pacific Islander1.0%
- American Indian and Alaska Native0.5%
Methodology
How we calculated this
The first name Dennis has a living-bearer frequency of 0.1289% of the US population, based on 441,864 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Dugan appears at a rate of 7.27 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0073%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 32 people with the full name Dennis Dugan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Dennis
FAQ
Dennis Dugan: questions and answers
How many people are named Dennis Dugan?
We estimate approximately 32 people in the United States share the full name Dennis Dugan. That works out to about 1 in 10,711,073 Americans. This is calculated by combining the first-name frequency (0.1289%) with the surname frequency (7.27 per 100K) against the current US population.
How rare is the name Dennis Dugan?
We classify Dennis Dugan as "Very Rare". About 1 in 10,711,073 Americans share this exact first and last name combination.
Is Dennis a male or female name?
Dennis is predominantly male. Out of 623,306 total SSA registrations, 99.6% were male and 0.4% were female. See the full Dennis 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.