Reagen is a distinctive girls' name in United States, ranking #4336 in 2011 with 34 recorded births. The name reached its all-time peak in 2008 with 35 births ranking #4432. Since 1996, the popularity has increased by 78.9%. In 2011, approximately 1 in every 51,730 girls born was named Reagen. FALLING Recent data shows the name is currently falling.