Reagen is a distinctive girls' name in United States, ranking #5506 in 2009 with 26 recorded births. The name reached its all-time peak in 2008 with 35 births ranking #4432. Since 1996, the popularity has increased by 36.8%. In 2009, approximately 1 in every 70,649 girls born was named Reagen. FALLING Recent data shows the name is currently falling.