Leonidas Boy
How popular is Leonidas?
#510 boy name in 2025
591 baby boys were named Leonidas in the US in 2025, making it the 510th most popular boy name.
Leonidas popularity over time
| Rank in 2025 | #510 for boys |
|---|---|
| Babies in 2025 | 591 boys |
| 10-year trend | Steady (+6% babies vs 2015) |
| Earlier ranks | #518 in 2015, #457 in 2020 |
| Peak year | 2022 (760 boys) |
| Highest rank | #421 in 2022 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.4% in a class of 25 kids born in 2025 |
Leonidas counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Leonidas family of names ranked #490 for boys in 2025 (#478 the year before), with 602 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Leonidas | 591 | 98% |
| Leonides | 11 | 2% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Leonidas is most popular
Babies named Leonidas per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Hawaii: 1.8 per 1,000 (28 boys)
- New Mexico: 1.0 per 1,000 (33 boys)
- Nevada: 0.8 per 1,000 (48 boys)
- Colorado: 0.8 per 1,000 (106 boys)
- Washington: 0.7 per 1,000 (117 boys)
Leonidas by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 22 | #819 |
| 1890s | 26 | #791 |
| 1900s | 5 | #1,057 |
| 1910s | 128 | #1,437 |
| 1920s | 180 | #1,382 |
| 1930s | 108 | #1,828 |
| 1940s | 71 | #2,179 |
| 1950s | 83 | #2,390 |
| 1960s | 112 | #1,890 |
| 1970s | 134 | #2,156 |
| 1980s | 142 | #2,595 |
| 1990s | 135 | #3,303 |
| 2000s | 733 | #877 |
| 2010s | 4,479 | #482 |
| 2020s | 3,923 | #421 |
Boy names about as popular as Leonidas
Questions
- Is Leonidas a boy or girl name?
- Leonidas is mostly a boy name. Over the last 10 years, 100% of babies named Leonidas were boys.
- How popular is the name Leonidas?
- 591 baby boys were named Leonidas in the US in 2025, making it the 510th most popular boy name.
- When was Leonidas most popular?
- Leonidas peaked in 2022, when 760 boys were given the name. Its highest rank was #421 in 2022.
- How many people are named Leonidas?
- 10,281 babies have been named Leonidas in the US since 1880. We estimate about 9,677 of them are alive in 2026, with a median age of 8.
- Where is Leonidas most popular?
- From 2021 to 2025, Leonidas was most common in Hawaii, at 1.8 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.