Is Flo a boy or girl name?

Flo is a girl’s name. Of the 2,094 Americans recorded with the name since 1880, 100.0% were girls and 0.0% were boys.

Flo

Recorded 1881–2024 · United States

Flo was most popular in 1917, when 57 American babies were given the name — ranking #1,718 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 2,094 people named Flo.

Flo over time

Births per year. The dot marks Flo’s peak in 1917. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Flo a boy’s or a girl’s name?

Across the whole record Flo is a girl’s name — 100.0% of the 2,094 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 Flo

Where Flo is most concentrated

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

Explore further

See Flo on the interactive charts

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