Regan is a distinctive girls' name in United States, ranking #548 in 2007 with 558 recorded births. The name reached its all-time peak in 2001 with 747 births ranking #391. Since 1996, the popularity has increased by 14.6%. In 2007, approximately 1 in every 3,445 girls born was named Regan. STABLE Recent data shows the name is currently stable.