Regan is a moderately popular girls' name in United States, ranking #450 in 1997 with 564 recorded births. This places Regan in the top 3% of ranked US girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2001 with 747 births ranking #391. Since 1996, the popularity has increased by 15.8%. In 1997, approximately 1 in every 3,086 girls born was named Regan. STABLE Recent data shows the name is currently stable.