girls:
74 births since 1966
#5642 (1st percentile)
boys:
31.5k births since 1885
#647 (86th percentile)
overall:
31.6k births since 1885
#1431 (82nd percentile)
The name Guillermo is the #1,431 most popular name of all time in the U.S. on a gender-neutral basis, with a total of 31,577 recorded births since 1885. This represents the 81.5% percentile of name popularity (more popular than 81.5% of all names). For boys, it ranks #647 (85.9% percentile) for all time with 31,503 births since 1885. For girls, it ranks #5,642 (1.3% percentile) for all time with 74 births since 1966.
Guillermo first appeared in U.S. birth records in 1885 (1885 for boys and 1966 for girls). Birth data for Guillermo is available in 123 out of the 139 years between 1885 and 2023 (123 years for boys and 13 years for girls). The Social Security Administration only reports birth data for years in which the name was given to at least five children of the same gender.
The name Guillermo has been given almost exclusively to boys, with 99.8% of all recorded births being male.
For boys, Guillermo reached its peak popularity in 1996, achieving the 56.8% percentile (ranked #337) with 345 births per million. The name was most common in 1996, with 345 births per million (ranked 56.8% percentile). Since reaching a low point around 2020, the popularity of this name for boys has been increasing. Currently, Guillermo ranks #634 for boys (30.4% percentile) with 158 births per million, which is 45.7% of its peak share of births.
For girls, Guillermo reached its peak popularity in 1991, achieving the 0.4% percentile (ranked #847) with 4 births per million. The name was most common in 1991, with 4 births per million (ranked 0.4% percentile). There have been no recorded female births with this name since 2006.
This chart shows the total number of births per million babies in each year for the name "Guillermo".
These names exclude other spelling variations of this name. View all variations of Guillermo.
These similar-looking names have spellings that are closest to the spelling of "Guillermo", in the sense that there are the fewest number of letter differences between the two spellings. These names exclude other spelling variations of this name. View all variations of Guillermo.
Our model has identified 10 different pronunciations for the name Guillermo. Click the play button under each pronunciation to hear it spoken aloud.
Our model is 32.1% confident that Guillermo is pronounced as gih-LAIR-moh, which has 3 syllables. The next most likely pronunciation is gee-AIR-moh, at 12.5% confidence, with 3 syllables.
If none of the pronunciations above sound right to you, could you please check whether any of these related pronunciations should be applied to the name Guillermo? These are pronunciations that other similar names use, but which are not currently associated with Guillermo. If you think any of these are valid pronunciations for Guillermo, please vote using the thumbs up button.
Our confidence scores estimate the likelihood that a particular pronunciation is the most correct for a given name spelling. These scores are derived from pronunciation dictionaries, manual verification, your feedback, and a fine-tuned large language model trained to generate name pronunciations.
For any given spelling, confidence scores across all identified pronunciations sum to 100%. However, these scores don't account for the possibility of valid pronunciations that our model hasn't identified.
The raw pronunciations shown (like G IH0 L EH1 R M OW0) use the ARPAbet phoneme system, a standardized way to represent English speech sounds. Each symbol represents a distinct sound in American English. Visit the ARPAbet Wikipedia page to learn more about these phonetic symbols.
Pronunciation audio is generated by an open source text to speech model that has been customized to adhere to pronunciations provided in ARPAbet format, but sometimes pronunciations that differ subtly will sound identical, particularly if the only difference is the level of emphasis on a syllable or a single vowel sound.
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