How old is someone named Marylou?
The average Marylou is 64 years old.
Half of all living Marylous are between 55 and 79.
When was Marylou popular?
Marylou peaked in 1942 and has been given less and less ever since. Only 28 babies got the name in 2025.
Popular names of 1942 · The most popular names of the 1940s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 54 | 0 |
| 1910s | 313 | 0 |
| 1920s | 1,251 | under 100 |
| 1930s | 2,621 | 610 |
| 1940s | 3,141 | 1,800 |
| 1950s | 2,128 | 1,700 |
| 1960s | 1,598 | 1,400 |
| 1970s | 536 | 500 |
| 1980s | 517 | 500 |
| 1990s | 356 | 350 |
| 2000s | 209 | 210 |
| 2010s | 228 | 230 |
| 2020s | 148 | 150 |
How many Marylous are still alive?
About 7,400 Marylous are alive in the US today. That's 56% of the roughly 13,000 babies named Marylou since 1898.
Roughly half of all Marylous ever born are still living.
What generation is the name Marylou?
About half of living Marylous are Baby Boomers, born between 1946 and 1964.
Is Marylou an old name?
Yes. Marylou is older than 94 in 100 names on AgeByName.
Is Marylou a boy or girl name?
Almost entirely girls: over 99.9% of living Marylous are women.
Names the same age as Marylou
NAME TWIN
Marylou's name twin is Maryann. Of all 3,713 names on AgeByName, Maryann's age curve is the closest match to Marylou's: 92% alike.
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Questions about the name Marylou
How old is the average Marylou?
The average Marylou in the US is 64 years old. The median is 69, so half are older and half younger.
How many people are named Marylou?
About 7,400 Marylous are alive in the US today, out of roughly 13,000 babies given the name since 1898.
When was the name Marylou most popular?
In 1942, when about 380 baby girls were named Marylou.
Is Marylou a Boomer name?
Partly. Baby Boomers are the largest group, about 46% of living Marylous, 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