Jacub is a distinctive boys' name in United States, ranking #7932 in 2009 with 10 recorded births. The name reached its all-time peak in 2008 with 14 births ranking #6206. Since 1996, the popularity has increased by 42.9%. In 2009, approximately 1 in every 198,331 boys born was named Jacub. RISING Recent data shows the name is currently rising.