Regan is a distinctive boys' name in United States, ranking #1927 in 2004 with 64 recorded births. The name reached its all-time peak in 2007 with 81 births ranking #1809. Since 1996, the popularity has increased by 18.5%. In 2004, approximately 1 in every 31,013 boys born was named Regan. FALLING Recent data shows the name is currently falling.