Regan is a moderately popular boys' name in England & Wales, ranking #241 in 2005 with 144 recorded births. This places Regan in the top 5% of ranked UK boys' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 1999 with 233 births ranking #151. In 2005, approximately 1 in every 2,149 boys born was named Regan. FALLING Recent data shows the name is currently falling.