Leonidas vs Leo

Side-by-side comparison of Leonidas and Leo — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Leonidas

Boy name · Rank #508

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Name B

Leo

Boy name · Rank #24

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Which name is more popular?

Metric Leonidas Leo
Current Rank #508 #24
Total Births (all years) 9,686 251,760
Peak Year 2022 2022
Peak Year Births 758 8,290
Peak Decade 2010ss 2010ss
Gender Boy Boy
First Recorded Year 1880 1880

Births by Decade

Decade Leonidas Leo
1880ss 22 2,098
1890ss 26 4,691
1900ss 5 5,629
1910ss 128 26,656
1920ss 180 36,960
1930ss 108 22,864
1940ss 71 16,962
1950ss 83 15,537
1960ss 112 9,485
1970ss 134 5,365
1980ss 142 4,542
1990ss 135 4,738
2000ss 733 12,274
2010ss 4,478 44,700
2020ss 3,329 39,259

Recent Annual Births (2014–present)

Year Leonidas Leo
2014 494 3,976
2015 556 4,602
2016 593 5,299
2017 582 5,965
2018 569 6,772
2019 607 7,501
2020 649 7,222
2021 687 7,802
2022 758 8,290
2023 638 8,152
2024 597 7,793

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1880–2024.

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