Mark Harmon
There are approximately 290 people named Mark Harmon living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 1,181,912 Americans.
This estimate combines SSA birth records for the first name Mark with Census Bureau frequency data for the surname Harmon. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
290
1 in 1,181,912
Named Mark
1.1M
Alive today
Named Harmon
87K
Alive today
US population
343M
Denominator
Estimated living: 1.1M
Rarity: Very Common
Gender: Male
Peak year: 1960
Average age: 56
Estimated bearers: 87K
Rarity: Uncommon
Census rank: #438
Per 100K: 25.34
Top ancestry: White (77.3%)
First name trend
Mark: popularity over time
Year-by-year SSA birth registrations for the first name Mark. The peak year was 1960 with 58,852 births. The average person named Mark today is 56 years old.
Babies born per year
Ethnicity
Ancestry of the Harmon surname
Self-reported race and ethnicity breakdown for people with the surname Harmon, from the 2010 US Census Bureau. The largest group is White at 77.3%.
- White77.3%
- Black or African American17.0%
- Hispanic or Latino2.3%
- Two or more races2.1%
- American Indian and Alaska Native0.7%
- Asian and Pacific Islander0.5%
Methodology
How we calculated this
The first name Mark has a living-bearer frequency of 0.3339% of the US population, based on 1,144,344 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Harmon appears at a rate of 25.34 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0253%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 290 people with the full name Mark Harmon. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Mark
Related
Other people with the surname Harmon
FAQ
Mark Harmon: questions and answers
How many people are named Mark Harmon?
We estimate approximately 290 people in the United States share the full name Mark Harmon. That works out to about 1 in 1,181,912 Americans. This is calculated by combining the first-name frequency (0.3339%) with the surname frequency (25.34 per 100K) against the current US population.
How rare is the name Mark Harmon?
We classify Mark Harmon as "Very Rare". About 1 in 1,181,912 Americans share this exact first and last name combination.
Is Mark a male or female name?
Mark is predominantly male. Out of 1,365,265 total SSA registrations, 99.7% were male and 0.3% were female. See the full Mark 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.