Regan is a distinctive girls' name in United States, ranking #723 in 2010 with 390 recorded births. The name reached its all-time peak in 2001 with 747 births ranking #391. Since 1996, the popularity has decreased by 19.9%. In 2010, approximately 1 in every 4,557 girls born was named Regan. STABLE Recent data shows the name is currently stable.