Regan is a distinctive girls' name in England & Wales, ranking #528 in 2004 with 61 recorded births. This places Regan in the top 9% of ranked UK girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2004 with 61 births ranking #528. Since 1996, the popularity has increased by 96.8%. In 2004, approximately 1 in every 4,686 girls born was named Regan. FALLING Recent data shows the name is currently falling.