Caileb is a distinctive boys' name in United States, ranking #7747 in 2002 with 8 recorded births. The name reached its all-time peak in 2009 with 18 births ranking #5130. Since 1996, the popularity has increased by 33.3%. In 2002, approximately 1 in every 242,684 boys born was named Caileb. FALLING Recent data shows the name is currently falling.