Jacub is a distinctive boys' name in United States, ranking #6298 in 1997 with 9 recorded births. The name reached its all-time peak in 2008 with 14 births ranking #6206. Since 1996, the popularity has increased by 28.6%. In 1997, approximately 1 in every 209,454 boys born was named Jacub. RISING Recent data shows the name is currently rising.