Kerwin is a distinctive boys' name in United States, ranking #4696 in 2004 with 18 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #2795. Since 1996, the popularity has decreased by 33.3%. In 2004, approximately 1 in every 110,267 boys born was named Kerwin. FALLING Recent data shows the name is currently falling.