How old is someone named Marilynn?
The average Marilynn is 62 years old.
Half of all living Marilynns are between 49 and 80. The average sits between a large older group and a younger one, so many Marilynns are much older than 62.
When was Marilynn popular?
Marilynn was at its most popular after World War II. Parents have been moving away from it for decades, and 41 babies were named Marilynn in 2025.
Popular names of 1947 · The most popular names of the 1940s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1910s | 213 | 0 |
| 1920s | 1,621 | under 100 |
| 1930s | 2,359 | 560 |
| 1940s | 3,569 | 2,000 |
| 1950s | 2,723 | 2,100 |
| 1960s | 653 | 570 |
| 1970s | 354 | 330 |
| 1980s | 301 | 290 |
| 1990s | 384 | 380 |
| 2000s | 261 | 260 |
| 2010s | 563 | 560 |
| 2020s | 281 | 280 |
How many Marilynns are still alive?
About 7,400 Marilynns are alive in the US today. That's 55% of the roughly 13,000 babies named Marilynn since 1914.
Roughly half of all Marilynns ever born are still living.
What generation is the name Marilynn?
About half of living Marilynns are Baby Boomers, born between 1946 and 1964.
Is Marilynn an old name?
Yes. Marilynn is older than 92 in 100 names on AgeByName.
Is Marilynn a boy or girl name?
Almost entirely girls: over 99.9% of living Marilynns are women.
Names the same age as Marilynn
NAME TWIN
Marilynn's name twin is Henrietta. Of all 3,713 names on AgeByName, Henrietta's age curve is the closest match to Marilynn's: 87% alike.
Other spellings: Marilyn (69)
Think you can guess a Brittany's age?
Ten names, one slider each. Share your score.
Questions about the name Marilynn
How old is the average Marilynn?
The average Marilynn in the US is 62 years old. The median is 72, so half are older and half younger.
How many people are named Marilynn?
About 7,400 Marilynns are alive in the US today, out of roughly 13,000 babies given the name since 1914.
When was the name Marilynn most popular?
In 1947, when about 410 baby girls were named Marilynn.
Is Marilynn a Boomer name?
Partly. Baby Boomers are the largest group, about 46% of living Marilynns, but the name spans several generations.
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