Regan is a distinctive boys' name in United States, ranking #2074 in 2003 with 55 recorded births. This places Regan in the top 16% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 81 births ranking #1809. In 2003, approximately 1 in every 35,914 boys born was named Regan. FALLING Recent data shows the name is currently falling.