Kacper is a distinctive boys' name in United States, ranking #1651 in 2006 with 87 recorded births. The name reached its all-time peak in 2007 with 88 births ranking #1714. Since 1996, the popularity has increased by 866.7%. In 2006, approximately 1 in every 23,622 boys born was named Kacper. STABLE Recent data shows the name is currently stable.