Kacper is a distinctive boys' name in United States, ranking #5017 in 2017 with 19 recorded births. The name reached its all-time peak in 2007 with 88 births ranking #1714. Since 1996, the popularity has increased by 111.1%. In 2017, approximately 1 in every 97,385 boys born was named Kacper. STABLE Recent data shows the name is currently stable.