Is Sian a boy or girl name?

Sian is mostly a girl’s name. Of the 1,030 Americans recorded with the name since 1880, 83.3% were girls and 16.7% were boys. It changed hands in 2025, and has gone mainly to boys since.

Name Legacy

Sian

Recorded 1962–2025 · United States

Sian was most popular in 2002, when 36 American babies were given the name — ranking #6,156 that year. In 2025 it ranked #7,732, with 31 births. Across 1880–2025 the Social Security Administration has recorded 1,030 people named Sian.

Sian over time

Births per year. The dot marks Sian’s peak in 2002. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Sian a boy’s or a girl’s name?

Across the whole record Sian is mostly a girl’s name — 83.3% of the 1,030 Americans given it were girls and 16.7% were boys. It changed hands: since 2025 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 45% girls and 55% 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 Sian

Explore further

See Sian on the interactive charts

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