The story of Kasia
Kasia is rare for girls in the United States, ranked #5,481 in 2025 with 23 babies given the name. It is currently holding steady compared with a decade ago.
Since 1958, 1,725 American babies have been named Kasia. Its peak came in 2002, when 71 newborns received the name, the signature sound of the 2000s.
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 Kasia stood among all girls' names in any year, or use the compare tool to plot it against other names.