Is Mariko a boy or girl name?

Mariko is a girl’s name. Of the 1,326 Americans recorded with the name since 1880, 99.6% were girls and 0.4% were boys.

Mariko

Recorded 1916–2025 · United States

Mariko was most popular in 1984, when 57 American babies were given the name — ranking #2,964 that year. In 2025 it ranked #16,070, with 10 births. Across 1880–2025 the Social Security Administration has recorded 1,326 people named Mariko.

Mariko over time

Births per year. The dot marks Mariko’s peak in 1984. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Mariko a boy’s or a girl’s name?

Across the whole record Mariko is a girl’s name — 99.6% of the 1,326 Americans given it were girls and 0.4% were boys. In births since 2016 it is 100% girls and 0% 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 Mariko

Where Mariko is most concentrated

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

California 8.0×

Explore further

See Mariko on the interactive charts

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