Jonathan Darby
There are approximately 52 people named Jonathan Darby living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 6,591,430 Americans.
This estimate combines SSA birth records for the first name Jonathan with Census Bureau frequency data for the surname Darby. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
52
1 in 6,591,430
Named Jonathan
825K
Alive today
Named Darby
22K
Alive today
US population
343M
Denominator
Estimated living: 825K
Rarity: Very Common
Gender: Male
Peak year: 1988
Average age: 35
Estimated bearers: 22K
Rarity: Uncommon
Census rank: #1,921
Per 100K: 6.36
Top ancestry: White (62.2%)
First name trend
Jonathan: popularity over time
Year-by-year SSA birth registrations for the first name Jonathan. The peak year was 1988 with 24,512 births. The average person named Jonathan today is 35 years old.
Babies born per year
Ethnicity
Ancestry of the Darby surname
Self-reported race and ethnicity breakdown for people with the surname Darby, from the 2010 US Census Bureau. The largest group is White at 62.2%.
- White62.2%
- Black or African American32.5%
- Two or more races2.2%
- Hispanic or Latino2.1%
- American Indian and Alaska Native0.5%
- Asian and Pacific Islander0.4%
Methodology
How we calculated this
The first name Jonathan has a living-bearer frequency of 0.2406% of the US population, based on 824,779 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Darby appears at a rate of 6.36 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0064%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 52 people with the full name Jonathan Darby. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Jonathan
FAQ
Jonathan Darby: questions and answers
How many people are named Jonathan Darby?
We estimate approximately 52 people in the United States share the full name Jonathan Darby. That works out to about 1 in 6,591,430 Americans. This is calculated by combining the first-name frequency (0.2406%) with the surname frequency (6.36 per 100K) against the current US population.
How rare is the name Jonathan Darby?
We classify Jonathan Darby as "Very Rare". About 1 in 6,591,430 Americans share this exact first and last name combination.
Is Jonathan a male or female name?
Jonathan is predominantly male. Out of 870,561 total SSA registrations, 99.6% were male and 0.4% were female. See the full Jonathan 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.