Humanverse

Leo vs Leobardo

American parents have registered 262,124 Leos since 1880, against 2,833 Leobardos. Leo is still ahead, with 8,196 babies in 2025.

Babies given each name, 1880–2025

Births per year: Leo against Leobardo, 1880 to 2025 0 2.5k 5k 7.5k 10k 1880 1900 1920 1940 1960 1980 2000 2020

Leo Leobardo

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

Leo 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 1998, when Leo had 527 and Leobardo had 84.

Side by side

  Leo Leobardo
Total US births 262,1242,833
Most in one year 8,32593
Babies in 2025 8,19628
Estimated living today 147,0002,600
Median age today 1025
Peak year 20222003
Best rank 22nd boys1,420th boys
Rank in 2025 19th3,848th
First recorded 18801920
Girls / boys 2,136 / 259,9880 / 2,833

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 Leobardos alive today are over 25; half the Leos are over 10. That is 15 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.

Compare something else

Related comparisons

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