How Many People Are Named Lillie?
An estimated 37,375 people in the United States have the first name Lillie. It is predominantly female (99.5%). The average bearer is 53 years old, and Lillie peaked in popularity in 1919 with 3,277 births that year.
Below you will find a full statistical profile of Lillie 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 Lillie paired with any surname.
Key Insights
- While Lillie is overwhelmingly female, 873 male births have been registered with this name since 1880.
Estimated Living Americans
37,375
About 1 in 9,171 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
99.5% confidence
Average Age
53
years old
Peak Year
1919
3,277 births
Total Registered
159,362
since 1880
Gender Distribution for Lillie
Lillie is almost exclusively a female name. Out of 159,362 total births registered, 99.5% were female.
Lillie as a male name
Ranked #4,769 in 1969
5 male births in 1969
Peak: 1929 (28 births)
Lillie as a female name
Ranked #684 in 2024
416 female births in 2024
Peak: 1919 (3,262 births)
Lillie: Popularity Over Time
SSA records for Lillie span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1920s, when 29,587 babies were registered. Lillie has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Lillie by Decade
How has Lillie 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1880s | 9,507 | 40 | 9,467 | |
| 1890s | 14,168 | 75 | 14,093 | |
| 1900s | 15,463 | 72 | 15,391 | |
| 1910s | 24,771 | 120 | 24,651 | |
| 1920s | 29,587 | 205 | 29,382 | |
| 1930s | 20,133 | 210 | 19,923 | |
| 1940s | 15,459 | 101 | 15,358 | |
| 1950s | 9,655 | 33 | 9,622 | |
| 1960s | 3,890 | 17 | 3,873 | |
| 1970s | 1,404 | 0 | 1,404 | |
| 1980s | 1,004 | 0 | 1,004 | |
| 1990s | 1,615 | 0 | 1,615 | |
| 2000s | 5,247 | 0 | 5,247 | |
| 2010s | 5,503 | 0 | 5,503 | |
| 2020s | 1,956 | 0 | 1,956 | |
Lillie by State
Birth registrations for Lillie span all 45 states and territories in the SSA database. The highest counts are in Georgia, Texas, Alabama. The lowest are in Wyoming, Connecticut, Delaware. On average, about 2,569 Lillies were registered per state.
Lillie + Last Name Combinations
How many people share a full name with Lillie as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lillie
Other first names starting with L with a similar number of bearers.
Lillie: Questions and Answers
How many people in the U.S. are named Lillie?
We estimate approximately 37,375 people named Lillie 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 9,171 Americans share this first name.
Is Lillie a common name?
Lillie is classified as "Uncommon" and is more popular than 99% of all first names in the SSA database. A total of 159,362 births have been registered with this name since 1880.
When was Lillie most popular?
Lillie reached peak popularity in 1919, when 3,277 babies were given this name. The average age of a living person named Lillie is approximately 53 years old, reflecting when the name was most commonly given.
Is Lillie a female name?
Lillie is predominantly female. 99.5% of people with this name are female. See the gender breakdown above for full details.
How many Lillie Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lillie Smith, Lillie Johnson, Lillie 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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