How Many People Are Named Lillain?
An estimated 0 people in the United States have the first name Lillain. It is almost exclusively a female name. The average bearer is 0 years old, and Lillain peaked in popularity in 1895 with 6 births that year.
Below you will find a full statistical profile of Lillain 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 Lillain paired with any surname.
Key Insights
- Lillain is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
0
About 1 in 1 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
0
years old
Peak Year
1895
6 births
Total Registered
28
since 1880
Gender Distribution for Lillain
Lillain is almost exclusively a female name. Out of 28 total births registered, 100.0% were female.
Lillain as a female name
Ranked #4,786 in 1924
6 female births in 1924
Peak: 1895 (6 births)
Lillain: Popularity Over Time
SSA records for Lillain span from the 1890s to the 1920s, covering 3 decades of naming data. The most popular decade for this name was the 1910s, when 16 babies were registered. While Lillain is less common than at its peak in the 1910s, it remains a well-established name with steady registrations.
Lillain by Decade
How has Lillain 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.
Lillain + Last Name Combinations
How many people share a full name with Lillain as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lillain
Other first names starting with L with a similar number of bearers.
Lillain: Questions and Answers
How many people in the U.S. are named Lillain?
We estimate approximately 0 people named Lillain 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 1 Americans share this first name.
Is Lillain a common name?
Lillain is classified as "Very Rare" and is more popular than 2.9% of all first names in the SSA database. A total of 28 births have been registered with this name since 1880.
When was Lillain most popular?
Lillain reached peak popularity in 1895, when 6 babies were given this name. The average age of a living person named Lillain is approximately 0 years old, reflecting when the name was most commonly given.
Is Lillain a female name?
Lillain is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Lillain Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lillain Smith, Lillain Johnson, Lillain 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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