Is Theia a boy or girl name?

Theia is a girl’s name. Of the 1,217 Americans recorded with the name since 1880, 100.0% were girls and 0.0% were boys.

Theia

Recorded 1967–2025 · United States

Theia was most popular in 2019, when 113 American babies were given the name — ranking #3,262 that year. In 2025 it ranked #3,600, with 97 births. Across 1880–2025 the Social Security Administration has recorded 1,217 people named Theia.

Theia over time

Births per year. The dot marks Theia’s peak in 2019. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Theia a boy’s or a girl’s name?

Across the whole record Theia is a girl’s name — 100.0% of the 1,217 Americans given it were girls and 0.0% 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 Theia

Where Theia is most concentrated

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

Explore further

See Theia on the interactive charts

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