How Many People Are Named Lilian?
An estimated 17,451 people in the United States have the first name Lilian. It is almost exclusively a female name. The average bearer is 19 years old, and Lilian peaked in popularity in 2007 with 786 births that year.
Below you will find a full statistical profile of Lilian 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 Lilian paired with any surname.
Estimated Living Americans
17,451
About 1 in 19,641 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
19
years old
Peak Year
2007
786 births
Total Registered
19,925
since 1880
Gender Distribution for Lilian
Lilian is almost exclusively a female name. Out of 19,925 total births registered, 100.0% were female.
Lilian as a female name
Ranked #558 in 2024
542 female births in 2024
Peak: 2007 (786 births)
Lilian: Popularity Over Time
SSA records for Lilian span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 5,931 babies were registered. While Lilian is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Lilian by Decade
How has Lilian 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.
Lilian by State
Birth registrations for Lilian span all 47 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in Rhode Island, New Mexico, Delaware. On average, about 342 Lilians were registered per state.
Lilian + Last Name Combinations
How many people share a full name with Lilian as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lilian
Other first names starting with L with a similar number of bearers.
Lilian: Questions and Answers
How many people in the U.S. are named Lilian?
We estimate approximately 17,451 people named Lilian 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 19,641 Americans share this first name.
Is Lilian a common name?
Lilian is classified as "Uncommon" and is more popular than 98.4% of all first names in the SSA database. A total of 19,925 births have been registered with this name since 1880.
When was Lilian most popular?
Lilian reached peak popularity in 2007, when 786 babies were given this name. The average age of a living person named Lilian is approximately 19 years old, reflecting when the name was most commonly given.
Is Lilian a female name?
Lilian is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Lilian Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lilian Smith, Lilian Johnson, Lilian 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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