Guillaume vs Guillermo

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

Name A

Guillaume

Boy name · Rank #11115

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Name B

Guillermo

Boy name · Rank #831

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Which name is more popular?

Metric Guillaume Guillermo
Current Rank #11115 #831
Total Births (all years) 341 31,807
Peak Year 1997 1998
Peak Year Births 19 693
Peak Decade 1990ss 1990ss
Gender Boy Boy
First Recorded Year 1967 1885

Births by Decade

Decade Guillaume Guillermo
1880ss — 5
1890ss — 13
1900ss — 44
1910ss — 253
1920ss — 821
1930ss — 783
1940ss — 943
1950ss — 1,495
1960ss 5 2,107
1970ss 34 3,357
1980ss 80 4,364
1990ss 114 6,462
2000ss 70 6,095
2010ss 32 3,615
2020ss 6 1,450

Recent Annual Births (2014–present)

Year Guillaume Guillermo
2014 — 376
2015 — 389
2016 5 322
2017 — 289
2018 — 314
2019 — 320
2020 — 275
2021 — 299
2022 — 287
2023 — 292
2024 6 297

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, 1967–2024.

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