How Many People Are Named Lillyan?
An estimated 2,178 people in the United States have the first name Lillyan. It is almost exclusively a female name. The average bearer is 16 years old, and Lillyan peaked in popularity in 2009 with 193 births that year.
Below you will find a full statistical profile of Lillyan 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 Lillyan paired with any surname.
Key Insights
- Lillyan is a modern name. With an average bearer age of just 16, it has gained most of its popularity in recent years.
Estimated Living Americans
2,178
About 1 in 157,371 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
16
years old
Peak Year
2009
193 births
Total Registered
2,412
since 1880
Gender Distribution for Lillyan
Lillyan is almost exclusively a female name. Out of 2,412 total births registered, 100.0% were female.
Lillyan as a female name
Ranked #7,784 in 2024
14 female births in 2024
Peak: 2009 (193 births)
Lillyan: Popularity Over Time
SSA records for Lillyan span from the 1900s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 2010s, when 1,032 babies were registered. Lillyan has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Lillyan by Decade
How has Lillyan 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.
Lillyan by State
Birth registrations for Lillyan span all 28 states and territories in the SSA database. The highest counts are in Ohio, Texas, Indiana. The lowest are in West Virginia, South Carolina, Maryland. On average, about 36 Lillyans were registered per state.
Lillyan + Last Name Combinations
How many people share a full name with Lillyan as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lillyan
Other first names starting with L with a similar number of bearers.
Lillyan: Questions and Answers
How many people in the U.S. are named Lillyan?
We estimate approximately 2,178 people named Lillyan 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 157,371 Americans share this first name.
Is Lillyan a common name?
Lillyan is classified as "Rare" and is more popular than 94% of all first names in the SSA database. A total of 2,412 births have been registered with this name since 1880.
When was Lillyan most popular?
Lillyan reached peak popularity in 2009, when 193 babies were given this name. The average age of a living person named Lillyan is approximately 16 years old, reflecting when the name was most commonly given.
Is Lillyan a female name?
Lillyan is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Lillyan Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lillyan Smith, Lillyan Johnson, Lillyan 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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