Marilu
Feminine
Marilú is a Spanish and Italian blend, and it is put together by a rule rather than by taste. Take María Luisa, keep the stressed syllable of each half, close the gap — Mari plus Lu — and the result is a name that is shorter than either parent and carries both. Spanish does this constantly: Maribel, Marisol, Maricarmen, Marilú.
How old is the name Marilu?
Marilu first appears in US birth records in 1919 — 106 years ago. The typical Marilu alive today was born around 1985, making them about 40 years old. About 2,000 people named Marilu are estimated to be alive in the US today.
When was the name Marilu most popular?
Marilu peaked in 1929, reaching #1892 nationally. Today it ranks #6838, 4,946 places below that high. See the whole 1929 chart.
Where it comes from
From María Luisa to Marilu
The story of Marilu
Spanish blend names built on María are a large and productive family, and they follow a strict shape: María contributes Mari-, the second name contributes its stressed syllable, and the accent falls at the end or on the join. Maribel from María Isabel, Marisol from María Soledad, Maritza from María Luisa in some regions, Marilú from María Luisa in most. The blends were at their most productive in the early twentieth century, which is where Marilu's 1929 American peak sits — carried by Mexican-American and Italian-American families at the same moment.
Meaning
Mary plus Louise: a disputed Hebrew name plus Germanic "famous warrior"
María is the Spanish Mary, whose Hebrew original Miryam has a genuinely contested meaning. Luisa is the feminine of Luis, from Germanic Hlodowig — hlud, "famous", plus wig, "war" — the same name as Ludwig and Louis. The blend carries both, and Spanish speakers hear the parts clearly.
How the name formed
- María Luisa
- Marilú
- Marilu
Related forms: Marilú · Marilù · Maribel
Pronouncing Marilu
mah-ree-LOO
Three syllables with the stress on the last — the accent in Marilú marks it, and American records usually drop the accent, which loses the instruction. Without it English speakers say MAR-ih-loo, moving the stress to the front.
Nicknames for Marilu
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1919
- Most girls named
- 199155 — the highest on record
- Peak rank
- #1892reached in 1929
- Change vs 2023
- −5.9%16 in 2025, from 17
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Marilu in other languages
The same name elsewhere
- Marilú in Spanish — same name
- Marilù in Italian — same name
- Maribel in Spanish — related form
Strongest US states over the last decade: Texas, California.
Marilus among us
people named Marilu are estimated to be alive in the US today
About 1 girl in 100,454 born in 2025 was named Marilu
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
The Eleonor test
Every popular name lives one long story — a climb, a peak, a slow settling back. Marilu's later chapters haven't been written yet, so we borrowed them: Eleonor climbed just as high around 1914, and its whole arc is on record. Line the two peaks up, and Eleonor's path sketches the road Marilu is walking now.
Marilu sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Marilu beside its neighbors
The names ranked closest to Marilu in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- Both halves are historic, ordinary names with settled meanings.
- It is a genuine Spanish and Italian formation rather than an American respelling.
- Mari and Lu both work as everyday names in their own right.
- The stress is on the final syllable and the American spelling does not say so.
- It reads as mid-century to Spanish-speaking ears.
- Marilu, Marilou and Marylou are different names with different parentage.
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What they receive
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Marilu
Feminine · #6838 in the U.S.
Frequently asked
- How many Marilus are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 2,000 people named Marilu are estimated to be alive in the US today.
- How popular is the name Marilu in 2025?
- Marilu ranks #6838 among US girl names in 2025, with 16 babies given the name.
- How rare is the name Marilu?
- About 1 in every 100,454 US girls born in 2025 was named Marilu — 16 in all.
- Will my child share the name Marilu with classmates?
- Marilu will almost certainly be the only one in school.
Ranked beside Marilu
Names sitting at a similar level of popularity right now.
Malana#6838 · Jeannie#6838 · Maxie#6838 · Nicol#6838 · Chaney#6838 · Keana#6838 · Concetta#6838 · Pheobe#6838
Looking for what else is popular rather than what resembles Marilu? See the current top 100.
Choosing between Marilu and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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