Recorded 1922–2011 · United States
Gillermo was most popular in 1993, when 21 American babies were given the name — ranking #7,529 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 633 people named Gillermo.
Across the whole record Gillermo is a boy’s name — 0.0% of the 633 Americans given it were girls and 100.0% were boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
How much more common the name is in each state than across the country as a whole.
See Gillermo on the interactive charts
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org