The story of Kleo
Kleo is rare for girls in the United States, ranked #2,874 in 2025 with 59 babies given the name. It is currently rising compared with a decade ago.
Since 2005, 426 American babies have been named Kleo, about 92% girls and 8% boys, making it a genuinely unisex name. Its peak came in 2024, when 65 newborns received the name, the signature sound of the 2020s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Kleo stood among all girls' names in any year, or use the compare tool to plot it against other names.