Feminine dossier · first seen 1898
Marylou
Endangered
Down 92.6% from peak
Peak era
1942
Peak births
376
Current vitality
Rare
Peak generation
Silent Generation
Quick answers about Marylou
How many people are named Marylou?
An estimated 5,678 living Americans are named Marylou.
How rare is Marylou?
Marylou is very rare among babies today, with 28 girls receiving the name in 2025, down 92.6% from its 1942 peak.
How old is the typical Marylou?
The median age of a living American named Marylou is approximately 65 years, with most bearers falling between 47 and 75 years old.
Is Marylou still popular?
No. Marylou is endangered as a baby name, down 92.6% from its 1942 peak with 28 births in 2025.
Where is Marylou most common?
Marylou has its strongest geographic signal in New Mexico, where it appears 5.3× more often than the national baseline.
1898Peak 19422025
Peak year
1942
Decline from peak
92.6%
2025
28
All-time
13,112