Girl name
Cleo
Cleo holds the #577 spot on the 2025 list of the most popular girl names in the U.S. That amounts to 516 newborn girls in a single year. After peaking all the way back in 1907, Cleo is staging a comeback — its rank has improved for at least three years in a row. Its strongest year on record was 1907 (#171 nationally, 325 newborns), in a data series reaching back to 1880. The name's biggest fan base is in Alaska (#134 there in 2025).
Rankings
2025 rank
#577
among girl names
Trend
Comeback
last 5 years
All-time peak
#171
in 1907 (1900s)
Babies in 2025
516
girls named Cleo
Cleo popularity, 1880–2025
Where Cleo is most popular
Share of girls born in 2025:lowhighno data (< 5 births)
Strongest states: Alaska (#134), Montana (#208), Utah (#249)
Uniqueness score
42/ 100Balanced
everywhereone of a kind
Well known, but far from crowded — the middle of the field. Based on how many babies per birth were named Cleo in the most recent year of SSA data.