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The first name Marylou

A girl’s name.

3 syllables Female

Meaning and origin

Variant of Mary Lou.

From Wiktionary (CC BY-SA 4.0).

Popularity

Babies registered in England and Wales, 1996–2025

In 2025, 4 girls were named Marylou, making it the 4,867th most popular girls’ name. It peaked in 2012, with 6 births (#3,681).

0510 1996200020052010201520202025
73
babies named Marylou, 1996–2025
#4,867
rank in 2025
2012
peak year

Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Marylou with other names.

Popularity in the United States

Babies named Marylou at birth, 1880–2025

In 2025, 28 girls born in the United States were named Marylou, the 4,835th most popular girls’ name that year. It was used most in 1942, when 376 were.

0200400 188018851890189519001905191019151920192519301935194019451950195519601965197019751980198519901995200020052010201520202025
13,112
babies named Marylou since 1880
#4,835
rank in 2025
1942
peak year

US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.

Famous people named Marylou

2 on Wikidata, most written-about first

  • Mary Lou Retton
    American gymnast (born 1968)
  • Oklou
    French singer-songwriter, born 1993

Questions

What does the name Marylou mean?
Variant of Mary Lou.
How popular is the name Marylou?
In 2025, 4 girls born in England and Wales were named Marylou, ranking 4,867th. Its peak was 2012, with 6 births.
Is Marylou a boy's or a girl's name?
Mostly a girl's name: 100% of the 13,112 US babies named Marylou since 1880 were girls.
When was Marylou most popular?
1942 in the United States, when 376 babies were named Marylou, its highest rank at 361st.