Regan is a moderately popular boys' name in England & Wales, ranking #203 in 2003 with 184 recorded births. The name reached its all-time peak in 1999 with 233 births ranking #151. Since 1996, the popularity has increased by 35.3%. In 2003, approximately 1 in every 1,628 boys born was named Regan. FALLING Recent data shows the name is currently falling.