How Many People Are Named Leo?
An estimated 144,829 people in the United States have the first name Leo. While not in the top 50, it remains a well-known name ranking #369 overall. It is predominantly male (99.2%). The average bearer is 28 years old, and Leo peaked in popularity in 2022 with 8,322 births that year.
Below you will find a full statistical profile of Leo 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 Leo paired with any surname.
Key Insights
- While Leo is overwhelmingly male, 2,113 female births have been registered with this name since 1880.
Estimated Living Americans
144,829
About 1 in 2,367 people in the U.S.
Rarity
Common
Predicted Gender
Male
99.2% confidence
Average Age
28
years old
Peak Year
2022
8,322 births
Total Registered
253,873
since 1880
Gender Distribution for Leo
Leo is almost exclusively a male name. Out of 253,873 total births registered, 99.2% were male.
Leo as a male name
Ranked #24 in 2024
7,793 male births in 2024
Peak: 2022 (8,290 births)
Leo as a female name
Ranked #6,518 in 2024
18 female births in 2024
Peak: 1918 (62 births)
Leo: Popularity Over Time
SSA records for Leo span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 44,821 babies were registered. Leo remains highly popular today, with recent registration numbers near its historical peak.
Leo by Decade
How has Leo 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 | 2,159 | 2,098 | 61 | |
| 1890s | 4,825 | 4,691 | 134 | |
| 1900s | 5,784 | 5,629 | 155 | |
| 1910s | 27,050 | 26,656 | 394 | |
| 1920s | 37,456 | 36,960 | 496 | |
| 1930s | 23,083 | 22,864 | 219 | |
| 1940s | 17,075 | 16,962 | 113 | |
| 1950s | 15,619 | 15,537 | 82 | |
| 1960s | 9,537 | 9,485 | 52 | |
| 1970s | 5,419 | 5,365 | 54 | |
| 1980s | 4,584 | 4,542 | 42 | |
| 1990s | 4,749 | 4,738 | 11 | |
| 2000s | 12,312 | 12,274 | 38 | |
| 2010s | 44,821 | 44,700 | 121 | |
| 2020s | 39,400 | 39,259 | 141 | |
Leo by State
Birth registrations for Leo span all 51 states and territories in the SSA database. The highest counts are in California, New York, Pennsylvania. The lowest are in Delaware, Wyoming, Alaska. On average, about 4,645 Leos were registered per state.
Leo + Last Name Combinations
How many people share a full name with Leo as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Leo
Other first names starting with L with a similar number of bearers.
Leo: Questions and Answers
How many people in the U.S. are named Leo?
We estimate approximately 144,829 people named Leo 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 2,367 Americans share this first name.
Is Leo a common name?
Leo is classified as "Common" and is more popular than 99.6% of all first names in the SSA database. A total of 253,873 births have been registered with this name since 1880.
When was Leo most popular?
Leo reached peak popularity in 2022, when 8,322 babies were given this name. The average age of a living person named Leo is approximately 28 years old, reflecting when the name was most commonly given.
Is Leo a male name?
Leo is predominantly male. 99.2% of people with this name are male. See the gender breakdown above for full details.
How many Leo Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Leo Smith, Leo Johnson, Leo 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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