Irwin is a distinctive boys' name in United States, ranking #2476 in 1998 with 35 recorded births. The name reached its all-time peak in 2007 with 47 births ranking #2620. Since 1996, the popularity has decreased by 14.6%. In 1998, approximately 1 in every 54,609 boys born was named Irwin. RISING Recent data shows the name is currently rising.