Girl’s name · French, Hebrew, Germanic

Marilou

How to say it: ma-ree-LOO · /maʁiˈlu/

French compound of Marie + Lou (from Louise) - charming retro-modern combination popular in Quebec and France.

Marilou was the 3,545th most popular girls’ name in the United States in 2025, given to 0 babies (Social Security Administration). Its busiest decade was the 1930s, its births are up about 10% in ten years, and it is projected to rise to #2,915 by 2030.

Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures

#3,545for girls in 2025
1 in 118,405US babies
0born in 2025
#2,915projected for 2030
1930sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Marilou
Rank among girls’ names, 2025#3,545
Babies born in 20250
Share of births1 in 118,405
Peak decade1930s
Change over 10 years+10%
Projected rank for 2030 (estimate)#2,915
In France, 2025#361 among girls’ names, 65 births

Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.

Its life, decade by decade

Marilou peaked in the 1930s.

1900195020002020–25
Peak: 58 per million births, 1930s.

What goes with it

Nicknames

  • Mari
  • Lou
  • Loulou

In the classroom

In a class of 25 children born in 2025, the chance that another child is called Marilou is about under 1 in 200.

Around the world

This spelling is used in English, French, Hebrew.

In France: #361 for girls in 2025.

Famous people named Marilou

From Wikidata and Wikipedia

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