Is Lilliam a boy or girl name?

Lilliam is a girl’s name. Of the 825 Americans recorded with the name since 1880, 100.0% were girls and 0.0% were boys.

Lilliam

Recorded 1886–2024 · United States

Lilliam was most popular in 1966, when 23 American babies were given the name — ranking #3,905 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 825 people named Lilliam.

Lilliam over time

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

Is Lilliam a boy’s or a girl’s name?

Across the whole record Lilliam is a girl’s name — 100.0% of the 825 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 Lilliam

Where Lilliam is most concentrated

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

New York 12.8×

Explore further

See Lilliam on the interactive charts

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