The story of Ky
Ky is rare for boys in the United States, ranked #3,623 in 2025 with 31 babies given the name. It is currently rising compared with a decade ago.
Since 1950, 1,659 American babies have been named Ky, about 91% boys and 9% girls, making it a genuinely unisex name. Its peak came in 1990, when 48 newborns received the name, the signature sound of the 1990s.
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 Ky stood among all boys' names in any year, or use the compare tool to plot it against other names.