Kacper is a distinctive boys' name in United States, ranking #5022 in 1998 with 13 recorded births. The name reached its all-time peak in 2007 with 88 births ranking #1714. Since 1996, the popularity has increased by 44.4%. In 1998, approximately 1 in every 147,024 boys born was named Kacper. STABLE Recent data shows the name is currently stable.