Kerwin is a distinctive boys' name in United States, ranking #6505 in 2012 with 13 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #2795. Since 1996, the popularity has decreased by 51.9%. In 2012, approximately 1 in every 145,894 boys born was named Kerwin. FALLING Recent data shows the name is currently falling.