Kacper is a distinctive boys' name in United States, ranking #1899 in 2004 with 65 recorded births. The name reached its all-time peak in 2007 with 88 births ranking #1714. Since 1996, the popularity has increased by 622.2%. In 2004, approximately 1 in every 30,535 boys born was named Kacper. STABLE Recent data shows the name is currently stable.