Is Alejo a boy or girl name?

Alejo is a boy’s name. Of the 904 Americans recorded with the name since 1880, 0.0% were girls and 100.0% were boys.

Alejo

Recorded 1909–2025 · United States

Alejo was most popular in 2025, when 22 American babies were given the name — ranking #9,648 that year. In 2025 it ranked #9,648, with 22 births. Across 1880–2025 the Social Security Administration has recorded 904 people named Alejo.

Alejo over time

Births per year. The dot marks Alejo’s peak in 2025. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Alejo a boy’s or a girl’s name?

Across the whole record Alejo is a boy’s name — 0.0% of the 904 Americans given it were girls and 100.0% were boys. In births since 2016 it is 0% girls and 100% 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.

Names that peaked alongside Alejo

Where Alejo is most concentrated

How much more common the name is in each state than across the country as a whole.

Explore further

See Alejo on the interactive charts

Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org