Humanverse

Leon vs Leonidas

American parents have registered 184,074 Leons since 1880, against 10,281 Leonidases. Leon is still ahead, with 2,583 babies in 2025.

Babies given each name, 1880–2025

Births per year: Leon against Leonidas, 1880 to 2025 0 800 1.6k 2.4k 3.2k 1880 1900 1920 1940 1960 1980 2000 2020

Leon Leonidas

Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.

Who was ahead

Leon has been the commoner name in every year either was published, 1880 to 2025. The lead has never changed hands.

The closest they came was 2015, when Leon had 1,140 and Leonidas had 556.

Side by side

  Leon Leonidas
Total US births 184,07410,281
Most in one year 2,714760
Babies in 2025 2,583591
Estimated living today 92,0009,700
Median age today 497
Peak year 19242022
Best rank 76th boys421st boys
Rank in 2025 138th510th
First recorded 18801880
Girls / boys 1,436 / 182,6380 / 10,281

A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.

Which name is older

Half of the Leons alive today are over 49; half the Leonidases are over 7. That is 42 years between them: two names in use at the same time, worn by two different generations.

Where each one is strongest

How much commoner the name is in that state than it is nationally, from births recorded since 1910.

Both names abroad

Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.

Country Leon Leonidas
France 138,195 Léon255
Poland 57,20452
England and Wales 22,8341,256
Switzerland 8,623205
Ireland 3,7879
Scotland 2,79037

Every spelling a country files separately is added together, over whatever years that country publishes — which is not the same range in any two of them, so read the columns against each other and not the rows.

Compare something else

Related comparisons

Social Security Administration birth records, 1880–2025, public domain. Full histories: Leon and Leonidas.