Kacper is a distinctive boys' name in United States, ranking #2306 in 2009 with 57 recorded births. The name reached its all-time peak in 2007 with 88 births ranking #1714. Since 1996, the popularity has increased by 533.3%. In 2009, approximately 1 in every 34,795 boys born was named Kacper. STABLE Recent data shows the name is currently stable.