Leo Boy
How popular is Leo?
#19 boy name in 2025
8,173 baby boys were named Leo in the US in 2025, making it the 19th most popular boy name. Another 23 girls got the name (#5,409 for girls).
149,182living people named Leo (est.)
11median age of people named Leo
262,124babies named Leo since 1880
1 in 405US babies born in 2025
Leo popularity over time
Boys Girls
| Rank in 2025 | #19 for boys (▲ 5 from 2024) |
|---|---|
| Babies in 2025 | 8,173 boys, 23 girls |
| 10-year trend | Rising fast (+78% babies vs 2015) |
| Earlier ranks | #91 in 2015, #36 in 2020 |
| Peak year | 2022 (8,293 boys) |
| Highest rank | #18 in 2023 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 6% in a class of 25 kids born in 2025 |
Where Leo is most popular
Babies named Leo per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFL
- District of Columbia: 12.7 per 1,000 (187 boys)
- Vermont: 12.4 per 1,000 (78 boys)
- Hawaii: 9.2 per 1,000 (143 boys)
- North Dakota: 9.2 per 1,000 (157 boys)
- South Dakota: 8.6 per 1,000 (160 boys)
Leo by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 2,098 | #57 |
| 1890s | 4,691 | #39 |
| 1900s | 5,629 | #37 |
| 1910s | 26,656 | #47 |
| 1920s | 36,960 | #48 |
| 1930s | 22,864 | #63 |
| 1940s | 16,962 | #112 |
| 1950s | 15,536 | #156 |
| 1960s | 9,487 | #230 |
| 1970s | 5,365 | #294 |
| 1980s | 4,541 | #341 |
| 1990s | 4,738 | #434 |
| 2000s | 12,274 | #210 |
| 2010s | 44,706 | #40 |
| 2020s | 47,481 | #18 |
Boy names about as popular as Leo
Questions
- Is Leo a boy or girl name?
- Leo is mostly a boy name. Over the last 10 years, 100% of babies named Leo were boys.
- How popular is the name Leo?
- 8,173 baby boys were named Leo in the US in 2025, making it the 19th most popular boy name. Another 23 girls got the name (#5,409 for girls).
- When was Leo most popular?
- Leo peaked in 2022, when 8,293 boys were given the name. Its highest rank was #18 in 2023.
- How many people are named Leo?
- 262,124 babies have been named Leo in the US since 1880. We estimate about 149,182 of them are alive in 2026, with a median age of 11.
- Where is Leo most popular?
- From 2021 to 2025, Leo was most common in District of Columbia, at 12.7 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.