How Many People Are Named Thomas Jefferson?
There are approximately 290 people named Thomas Jefferson living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,181,912 Americans.
This estimate combines SSA birth records for the first name Thomas with Census Bureau frequency data for the surname Jefferson. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
290
1 in 1,181,912 Americans
Combination Rarity
Uncommon
First Name
View full profileThomas
Last Name
View full profileJefferson
Thomas: Popularity Over Time
Year-by-year SSA birth registrations for the first name Thomas. The peak year was 1952 with 48,728 births. The average person named Thomas today is 55 years old.
Ancestry of the Jefferson Surname
Self-reported race and ethnicity breakdown for people with the surname Jefferson, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Thomas" has an estimated frequency of 0.452% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Jefferson" appears at a rate of 18.71 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 290 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Thomas
Other people with the surname Jefferson
Thomas Jefferson: Questions and Answers
How many people are named Thomas Jefferson?
We estimate approximately 290 people named Thomas Jefferson are alive in the United States today. The first name Thomas is shared by 1,548,322 Americans, and the surname Jefferson is shared by 62,846.
How rare is the name Thomas Jefferson?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,181,912 Americans. The first name Thomas is very common and the surname Jefferson is uncommon.
Is Thomas a male or female name?
Thomas is predominantly male, with 99.6% of bearers being male and 0.4% female. It peaked in popularity in 1952 and the average bearer today is 55 years old.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. Surname data comes from the 2010 U.S. Census Bureau. Full methodology.
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