Humanverse

Guillermo vs Guiseppe

American parents have registered 32,148 Guillermos since 1880, against 575 Guiseppes. Guillermo is still ahead, with 264 babies in 2025.

Babies given each name, 1880–2025

Births per year: Guillermo against Guiseppe, 1880 to 2025 0 200 400 600 800 1880 1900 1920 1940 1960 1980 2000 2020

Guillermo Guiseppe

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

Guillermo has been the commoner name in every year either was published, 1885 to 2025. The lead has never changed hands.

The closest they came was 1911, when Guillermo had 10 and Guiseppe had 6.

Side by side

  Guillermo Guiseppe
Total US births 32,148575
Most in one year 69324
Babies in 2025 264under 5
Estimated living today 28,000390
Median age today 3035
Peak year 19981990
Best rank 369th boys2,695th boys
Rank in 2025 901stunranked
First recorded 18851911
Girls / boys 74 / 32,0740 / 575

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 Guiseppes alive today are over 35; half the Guillermos are over 30. That is 5 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 Guillermo Guiseppe
France 3501,060
England and Wales 5515

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: Guillermo and Guiseppe.