Marilou
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Meaning
a combination of Maria and Louise, or Maria and Lourdes in the Philippines
How popular is Marilou around the world?
In the United States, 32 babies were named Marilou between 2020 and 2025. In Canada, 40 girls named Marilou were born in 2024, the 726th most common name among girls that year.
Marilou is on the official records of the United States, Canada, France, Austria and Spain.
United States
1 in 680,000
In the United States, 32 babies were named Marilou between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Marilou has stayed rare in US records the whole time: no peak decade to name.
Births with a Social Security record. Source: U.S. Social Security Administration
Canada
1 in 9,100
In Canada, 40 girls named Marilou were born in 2024, the 726th most common name among girls that year.
share of that year’s name registrations
First given names from provincial and territorial vital statistics across Canada; any name-sex-year under 5 is excluded at source, and small Quebec counts carry a randomized adjustment made at source. Shares divide by Statistics Canada’s count of live births for the year; the 2024 count is preliminary. Source: Statistics Canada, first names at birth (table 17-10-0147-01)
France
1 in 9,900
In France, about 65 girls named Marilou were born in 2025, the 644th most common name among girls that year.
share of that year’s births on record
Births in France by year of birth, from INSEE’s fichier des prénoms (1900–2025; Mayotte from 2012); exact spellings count separately (Léo and Leo are different names), any spelling under 3 in a year and sex is withheld at source, every count is rounded to the nearest 5 at source, and nametree keeps the spellings that reached 20 in some year. Shares divide by INSEE’s count of births in France from 1957, and before that by the file’s own total for the year; INSEE says the file is not complete before 1946. Source: Insee, fichier des prénoms (last updated 2026-07-16)
Austria
1 in 76,000
In Austria, 1 girl named Marilou was born in 2025, ranked 1,875th among girls that year, spellings that differ only by special characters counted together.
The count never rose above 3 in a year, too few to chart.
Live births in Austria by year of birth, 1984–2025, from Statistik Austria’s first-name statistics; spellings that differ only by special characters are counted together (umlauts stay apart), every name down to a single birth is published, and the count covers babies with Austrian citizenship only until 2009, every baby from 2010, and from 2015 also births abroad to mothers living in Austria. Shares divide by Statistik Austria’s count of live births from 2010, and before that by the file’s own total for the year. Source: Statistik Austria - data.statistik.gv.at (OGDEXT_VORNAMEN_1, updated 2026-07-09)
Spain
1 in 320,000
In Spain, 140 residents are named Marilou, ranked 5,929th among women, with a mean age of 50.4 years.
Residents of Spain on 1 January 2025. Spain publishes how old a name’s living bearers are, not a birth series, so there is no year chart. Source: INE (Spain), Censo de Población anual, 1 January 2025
South Australia
last on record 1963
Marilou is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 1 in a year, too few to chart.
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Not on the record in Mexico City, Argentina, Puerto Rico, England and Wales, Ireland, New Zealand, Scotland and Poland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown. Not on the Montevideo record for 1940 to 2011: that registry withholds nothing, so this spelling was not given there in those years. Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
When you meet Marilou
Most people given the name Marilou in the United States were born between 1940 and 1979. The Marilou you meet today is most often in her 60s or 70s.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Marilou deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Marilou truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Marilou fits with your family’s names and surname.
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