Kacper is a moderately popular boys' name in England & Wales, ranking #172 in 2012 with 341 recorded births. This places Kacper in the top 3% of ranked UK boys' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2008 with 341 births ranking #158. In 2012, approximately 1 in every 1,022 boys born was named Kacper. FALLING Recent data shows the name is currently falling.