Reagen is a distinctive girls' name in United States, ranking #5997 in 2017 with 21 recorded births. The name reached its all-time peak in 2008 with 35 births ranking #4432. Since 1996, the popularity has increased by 10.5%. In 2017, approximately 1 in every 82,185 girls born was named Reagen. FALLING Recent data shows the name is currently falling.