How old is someone named Marilyn?
The average Marilyn is 69 years old.
Half of all living Marilyns are between 64 and 81.
When was Marilyn popular?
Parents have been choosing Marilyn less often since its peak in 1947; 356 babies got the name in 2025.
Popular names of 1947 · The most popular names of the 1940s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 132 | 0 |
| 1910s | 1,306 | 0 |
| 1920s | 34,295 | 980 |
| 1930s | 98,875 | 21,000 |
| 1940s | 99,226 | 56,000 |
| 1950s | 80,328 | 62,000 |
| 1960s | 27,105 | 24,000 |
| 1970s | 7,992 | 7,500 |
| 1980s | 5,610 | 5,400 |
| 1990s | 5,766 | 5,700 |
| 2000s | 5,376 | 5,300 |
| 2010s | 6,382 | 6,300 |
| 2020s | 2,459 | 2,400 |
How many Marilyns are still alive?
About 200,000 Marilyns are alive in the US today. That's 53% of the roughly 370,000 babies named Marilyn since 1899.
Roughly half of all Marilyns ever born are still living.
What generation is the name Marilyn?
About half of living Marilyns are Baby Boomers, born between 1946 and 1964.
Is Marilyn an old name?
Yes. Marilyn is older than 98 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Marilyn will be 55 in 2056, so its average age will actually fall, as the youngest Marilyns make up more of the total.
Is Marilyn a boy or girl name?
Almost entirely girls: 99.8% of living Marilyns are women.
Names the same age as Marilyn
NAME TWIN
Marilyn's name twin is Joyce. Of all 3,713 names on AgeByName, Joyce's age curve is the closest match to Marilyn's: 91% alike.
Other spellings: Marilynn (62)
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Questions about the name Marilyn
How old is the average Marilyn?
The average Marilyn in the US is 69 years old. The median is 74, so half are older and half younger.
How many people are named Marilyn?
About 200,000 Marilyns are alive in the US today, out of roughly 370,000 babies given the name since 1899.
When was the name Marilyn most popular?
In 1947, when about 12,000 baby girls were named Marilyn.
Is Marilyn a Boomer name?
Yes. About 53% of living Marilyns are Baby Boomers, born between 1946 and 1964.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). Updated each spring. How we calculate this