Jacub is a distinctive boys' name in United States, ranking #11373 in 2002 with 5 recorded births. The name reached its all-time peak in 2008 with 14 births ranking #6206. Since 1996, the popularity has decreased by 28.6%. In 2002, approximately 1 in every 388,294 boys born was named Jacub. RISING Recent data shows the name is currently rising.