Kacper is a distinctive boys' name in United States, ranking #1714 in 2007 with 88 recorded births. The name reached its all-time peak in 2007 with 88 births ranking #1714. Since 1996, the popularity has increased by 877.8%. In 2007, approximately 1 in every 23,582 boys born was named Kacper. STABLE Recent data shows the name is currently stable.