Rob is a distinctive boys' name in United States, ranking #4998 in 2000 with 15 recorded births. This places Rob in the top 41% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 19 births ranking #3646. Since 1996, the popularity has decreased by 21.1%. In 2000, approximately 1 in every 130,929 boys born was named Rob. FALLING Recent data shows the name is currently falling.