How Many People Are Named Lillia?
An estimated 1,802 people in the United States have the first name Lillia. It is almost exclusively a female name. The average bearer is 24 years old, and Lillia peaked in popularity in 2013 with 73 births that year.
Below you will find a full statistical profile of Lillia 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 Lillia paired with any surname.
Estimated Living Americans
1,802
About 1 in 190,208 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
24
years old
Peak Year
2013
73 births
Total Registered
2,578
since 1880
Gender Distribution for Lillia
Lillia is almost exclusively a female name. Out of 2,578 total births registered, 100.0% were female.
Lillia as a female name
Ranked #3,138 in 2024
51 female births in 2024
Peak: 2013 (73 births)
Lillia: Popularity Over Time
SSA records for Lillia span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 600 babies were registered. While Lillia is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Lillia by Decade
How has Lillia 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.
Lillia by State
Birth registrations for Lillia span all 14 states and territories in the SSA database. The highest counts are in California, Ohio, Texas. The lowest are in Washington, Utah, Minnesota. On average, about 21 Lillias were registered per state.
Lillia + Last Name Combinations
How many people share a full name with Lillia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lillia
Other first names starting with L with a similar number of bearers.
Lillia: Questions and Answers
How many people in the U.S. are named Lillia?
We estimate approximately 1,802 people named Lillia 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 190,208 Americans share this first name.
Is Lillia a common name?
Lillia is classified as "Rare" and is more popular than 93.3% of all first names in the SSA database. A total of 2,578 births have been registered with this name since 1880.
When was Lillia most popular?
Lillia reached peak popularity in 2013, when 73 babies were given this name. The average age of a living person named Lillia is approximately 24 years old, reflecting when the name was most commonly given.
Is Lillia a female name?
Lillia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Lillia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lillia Smith, Lillia Johnson, Lillia 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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