Kerwin is a distinctive boys' name in United States, ranking #6289 in 2009 with 14 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #2795. Since 1996, the popularity has decreased by 48.1%. In 2009, approximately 1 in every 141,665 boys born was named Kerwin. FALLING Recent data shows the name is currently falling.