How Many People Are Named Lilou?
An estimated 344 people in the United States have the first name Lilou. It is almost exclusively a female name. The average bearer is 10 years old, and Lilou peaked in popularity in 2016 with 41 births that year.
Below you will find a full statistical profile of Lilou as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Lilou paired with any surname.
Estimated Living Americans
344
About 1 in 996,379 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
10
years old
Peak Year
2016
41 births
Total Registered
347
since 1880
Gender Distribution for Lilou
Lilou is almost exclusively a female name. Out of 347 total births registered, 100.0% were female.
Lilou as a female name
Ranked #8,712 in 2024
12 female births in 2024
Peak: 2016 (41 births)
Lilou: Popularity Over Time
SSA records for Lilou span from the 2000s to the 2020s, covering 3 decades of naming data. The most popular decade for this name was the 2010s, when 223 babies were registered. While Lilou is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Lilou by Decade
How has Lilou tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Lilou by State
Birth registrations for Lilou span all 3 states and territories in the SSA database. The highest counts are in California, New York, Florida. The lowest are in Florida, New York, California. On average, about 15 Lilous were registered per state.
Lilou + Last Name Combinations
How many people share a full name with Lilou as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lilou
Other first names starting with L with a similar number of bearers.
Lilou: Questions and Answers
How many people in the U.S. are named Lilou?
We estimate approximately 344 people named Lilou are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 996,379 Americans share this first name.
Is Lilou a common name?
Lilou is classified as "Very Rare" and is more popular than 80.7% of all first names in the SSA database. A total of 347 births have been registered with this name since 1880.
When was Lilou most popular?
Lilou reached peak popularity in 2016, when 41 babies were given this name. The average age of a living person named Lilou is approximately 10 years old, reflecting when the name was most commonly given.
Is Lilou a female name?
Lilou is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Lilou Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lilou Smith, Lilou Johnson, Lilou Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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