Kerwin is a distinctive boys' name in United States, ranking #3442 in 1999 with 23 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #2795. Since 1996, the popularity has decreased by 14.8%. In 1999, approximately 1 in every 83,482 boys born was named Kerwin. FALLING Recent data shows the name is currently falling.