Kerwin is a distinctive boys' name in United States, ranking #3481 in 2000 with 24 recorded births. The name reached its all-time peak in 1996 with 27 births ranking #2795. Since 1996, the popularity has decreased by 11.1%. In 2000, approximately 1 in every 81,831 boys born was named Kerwin. FALLING Recent data shows the name is currently falling.