How Many People Are Named Gregory Sierra?
There are approximately 73 people named Gregory Sierra living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 4,695,265 Americans.
This estimate combines SSA birth records for the first name Gregory with Census Bureau frequency data for the surname Sierra. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
73
1 in 4,695,265 Americans
Combination Rarity
Rare
First Name
View full profileGregory
Last Name
View full profileSierra
Gregory: Popularity Over Time
Year-by-year SSA birth registrations for the first name Gregory. The peak year was 1962 with 22,058 births. The average person named Gregory today is 55 years old.
Ancestry of the Sierra Surname
Self-reported race and ethnicity breakdown for people with the surname Sierra, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Gregory" has an estimated frequency of 0.176% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Sierra" appears at a rate of 12.13 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 73 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Gregory
Other people with the surname Sierra
Gregory Sierra: Questions and Answers
How many people are named Gregory Sierra?
We estimate approximately 73 people named Gregory Sierra are alive in the United States today. The first name Gregory is shared by 603,591 Americans, and the surname Sierra is shared by 40,744.
How rare is the name Gregory Sierra?
This name combination is classified as Rare, occurring at a rate of about 1 in 4,695,265 Americans. The first name Gregory is very common and the surname Sierra is uncommon.
Is Gregory a male or female name?
Gregory is predominantly male, with 99.6% of bearers being male and 0.4% female. It peaked in popularity in 1962 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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