Lylou
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Meaning
a spelling of Lilou, either a pet form of French names with the sound "li" or a blend of Lili and Louise, the feminine of Louis, "famous in battle"
How popular is Lylou around the world?
Lylou has no published row in the national Social Security baby-name files from 1880 through 2025. Those files omit name-and-sex counts below five, so there is no popularity curve to chart and no basis for saying the name was never used. In France, about 85 girls named Lylou were born in 2025, the 546th most common name among girls that year.
Lylou is on the official records of France.
United States
no published row
Lylou has no published row in the national Social Security baby-name files from 1880 through 2025. Those files omit name-and-sex counts below five, so there is no popularity curve to chart and no basis for saying the name was never used.
Births with a Social Security record. Source: U.S. Social Security Administration
France
1 in 7,600
In France, about 85 girls named Lylou were born in 2025, the 546th 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)
Canada
last on record 2022
Lylou is not on the 2024 record for Canada, where names under 5 in a year are excluded at source.
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)
Not on the record in Spain, 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 the South Australia record for 1944 to 2017: that registry withholds nothing, so this spelling was not given there in those years. Not on the Austria record for 1984 to 2025: Statistik Austria publishes every first name down to a single birth, so this name was not given there in those years (before 2010 the record covers babies with Austrian citizenship only). Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
The Lylou deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Lylou truly comes from, how it traveled, and what the published record can and cannot tell us, without inventing a curve. If you have grown a tree on nametree, it also considers how Lylou fits with your family’s names and surname.
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