Erwin is a distinctive boys' name in United States, ranking #1818 in 1998 with 55 recorded births. The name reached its all-time peak in 2005 with 109 births ranking #1375. Since 1996, the popularity has decreased by 31.3%. In 1998, approximately 1 in every 34,751 boys born was named Erwin. STABLE Recent data shows the name is currently stable.