Kerwin is a distinctive boys' name in United States, ranking #4205 in 2003 with 20 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #2795. Since 1996, the popularity has decreased by 25.9%. In 2003, approximately 1 in every 98,763 boys born was named Kerwin. FALLING Recent data shows the name is currently falling.