How Many People Are Named Marillyn?
An estimated 45 people in the United States have the first name Marillyn. It is almost exclusively a female name. The average bearer is 89 years old, and Marillyn peaked in popularity in 1927 with 40 births that year.
Below you will find a full statistical profile of Marillyn as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Marillyn paired with any surname.
Key Insights
- With an average bearer age of 89, Marillyn is a vintage name most associated with earlier generations. Most living bearers were born before 1947.
- Marillyn is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
45
About 1 in 7,616,763 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
89
years old
Peak Year
1927
40 births
Total Registered
437
since 1880
Gender Distribution for Marillyn
Marillyn is almost exclusively a female name. Out of 437 total births registered, 100.0% were female.
Marillyn as a female name
Ranked #3,916 in 1947
9 female births in 1947
Peak: 1927 (40 births)
Marillyn: Popularity Over Time
SSA records for Marillyn span from the 1920s to the 1940s, covering 3 decades of naming data. The most popular decade for this name was the 1920s, when 231 babies were registered. Marillyn has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Marillyn by Decade
How has Marillyn tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Marillyn by State
Birth registrations for Marillyn span all 6 states and territories in the SSA database. The highest counts are in Illinois, California, Minnesota. The lowest are in Wisconsin, New York, Michigan. On average, about 10 Marillyns were registered per state.
Marillyn + Last Name Combinations
How many people share a full name with Marillyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Marillyn
Other first names starting with M with a similar number of bearers.
Marillyn: Questions and Answers
How many people in the U.S. are named Marillyn?
We estimate approximately 45 people named Marillyn are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 7,616,763 Americans share this first name.
Is Marillyn a common name?
Marillyn is classified as "Very Rare" and is more popular than 52.7% of all first names in the SSA database. A total of 437 births have been registered with this name since 1880.
When was Marillyn most popular?
Marillyn reached peak popularity in 1927, when 40 babies were given this name. The average age of a living person named Marillyn is approximately 89 years old, reflecting when the name was most commonly given.
Is Marillyn a female name?
Marillyn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Marillyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Marillyn Smith, Marillyn Johnson, Marillyn Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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