How Many People Are Named Mary Shelley?
There are approximately 72 people named Mary Shelley living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 4,760,477 Americans.
This estimate combines SSA birth records for the first name Mary with Census Bureau frequency data for the surname Shelley. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
72
1 in 4,760,477 Americans
Combination Rarity
Rare
First Name
View full profileMary
Last Name
View full profileShelley
Mary: Popularity Over Time
Year-by-year SSA birth registrations for the first name Mary. The peak year was 1921 with 74,171 births. The average person named Mary today is 65 years old.
Ancestry of the Shelley Surname
Self-reported race and ethnicity breakdown for people with the surname Shelley, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Mary" has an estimated frequency of 0.436% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Shelley" appears at a rate of 4.85 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 72 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Mary
Other people with the surname Shelley
Mary Shelley: Questions and Answers
How many people are named Mary Shelley?
We estimate approximately 72 people named Mary Shelley are alive in the United States today. The first name Mary is shared by 1,492,757 Americans, and the surname Shelley is shared by 16,291.
How rare is the name Mary Shelley?
This name combination is classified as Rare, occurring at a rate of about 1 in 4,760,477 Americans. The first name Mary is very common and the surname Shelley is uncommon.
Is Mary a male or female name?
Mary is predominantly female, with 0.4% of bearers being male and 99.6% female. It peaked in popularity in 1921 and the average bearer today is 65 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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