Rob is a distinctive boys' name in United States, ranking #6147 in 2005 with 13 recorded births. The name reached its all-time peak in 1996 with 19 births ranking #3646. Since 1996, the popularity has decreased by 31.6%. In 2005, approximately 1 in every 153,627 boys born was named Rob. FALLING Recent data shows the name is currently falling.