Rob is a distinctive boys' name in United States, ranking #6304 in 2010 with 14 recorded births. The name reached its all-time peak in 1996 with 19 births ranking #3646. Since 1996, the popularity has decreased by 26.3%. In 2010, approximately 1 in every 137,029 boys born was named Rob. FALLING Recent data shows the name is currently falling.