Is Reiko a boy or girl name?

Reiko is a girl’s name. Of the 690 Americans recorded with the name since 1880, 97.2% were girls and 2.8% were boys.

Reiko

Recorded 1921–2023 · United States

Reiko was most popular in 1975, when 29 American babies were given the name — ranking #4,138 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 690 people named Reiko.

Reiko over time

Births per year. The dot marks Reiko’s peak in 1975. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Reiko a boy’s or a girl’s name?

Across the whole record Reiko is a girl’s name — 97.2% of the 690 Americans given it were girls and 2.8% were boys. In births since 2016 it is 88% girls and 12% 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 Reiko

Where Reiko is most concentrated

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

California 9.4×

Explore further

See Reiko on the interactive charts

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