Guillermo
girl nameGuillermo entered the US charts in 1966, peaked at #6564 in 1966, is rarely given today — a rare gem few children share.
Popularity 1966–2025
—
rank today
#6564
peak (1966)
0
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1960s | #6564 |
| 1970s | #9067 |
| 1980s | #10759 |
| 1990s | #10793 |
| 2000s | #17168 |
Living bearers
Fewer than a hundred people named Guillermo are estimated to be alive in the US today — a true one-of-a-kind name.
The typical Guillermo alive today was born around 1991, making them about 34 years old.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Guillermo in 2025?
- Guillermo is rarely given in the US today — it does not rank in the top 2000 girl names.
- When was the name Guillermo most popular?
- Guillermo peaked in 1966, reaching #6564 among US girl names.
- Will my child share the name Guillermo with classmates?
- Guillermo will almost certainly be the only one in school.
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