Trajan Langdon
There are approximately 1 people named Trajan Langdon living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Trajan with Census Bureau frequency data for the surname Langdon. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
1
1 in 342,754,338
Named Trajan
777
Alive today
Named Langdon
10K
Alive today
US population
343M
Denominator
Estimated living: 777
Rarity: Very Rare
Gender: Male
Peak year: 1999
Average age: 20
Estimated bearers: 10K
Rarity: Uncommon
Census rank: #4,041
Per 100K: 2.98
Top ancestry: White (92.6%)
First name trend
Trajan: popularity over time
Year-by-year SSA birth registrations for the first name Trajan. The peak year was 1999 with 141 births. The average person named Trajan today is 20 years old.
Babies born per year
Ethnicity
Ancestry of the Langdon surname
Self-reported race and ethnicity breakdown for people with the surname Langdon, from the 2010 US Census Bureau. The largest group is White at 92.6%.
- White92.6%
- Black or African American3.4%
- Hispanic or Latino1.8%
- Two or more races1.3%
- Asian and Pacific Islander0.5%
- American Indian and Alaska Native0.4%
Methodology
How we calculated this
The first name Trajan has a living-bearer frequency of 0.0002% of the US population, based on 777 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Langdon appears at a rate of 2.98 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0030%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Trajan Langdon. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Trajan Langdon: questions and answers
How many people are named Trajan Langdon?
We estimate approximately 1 people in the United States share the full name Trajan Langdon. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0002%) with the surname frequency (2.98 per 100K) against the current US population.
How rare is the name Trajan Langdon?
We classify Trajan Langdon as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Trajan a male or female name?
Trajan is predominantly male. Out of 787 total SSA registrations, 100.0% were male and 0.0% were female. See the full Trajan 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.