The story of Kostas
Kostas is rare for boys in the United States, ranked #10,247 in 2025 with 7 babies given the name. It is currently rising compared with a decade ago.
Since 1961, 372 American babies have been named Kostas. Its peak came in 1974, when 17 newborns received the name, the signature sound of the 1970s.
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 Kostas stood among all boys' names in any year, or use the compare tool to plot it against other names.