Is Sonji a boy or girl name?

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

Sonji

Recorded 1951–1991 · United States

Sonji was most popular in 1966, when 225 American babies were given the name — ranking #1,126 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 904 people named Sonji.

Sonji over time

Births per year. The dot marks Sonji’s peak in 1966. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Sonji a boy’s or a girl’s name?

Across the whole record Sonji is a girl’s name — 100.0% of the 904 Americans given it were girls and 0.0% 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.

Names that peaked alongside Sonji

Where Sonji is most concentrated

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

Explore further

See Sonji on the interactive charts

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