Irwin is a distinctive boys' name in United States, ranking #6798 in 2014 with 12 recorded births. The name reached its all-time peak in 2007 with 47 births ranking #2620. Since 1996, the popularity has decreased by 70.7%. In 2014, approximately 1 in every 160,037 boys born was named Irwin. RISING Recent data shows the name is currently rising.