Reagen is a distinctive girls' name in United States, ranking #6632 in 1998 with 15 recorded births. The name reached its all-time peak in 2008 with 35 births ranking #4432. Since 1996, the popularity has decreased by 21.1%. In 1998, approximately 1 in every 117,793 girls born was named Reagen. FALLING Recent data shows the name is currently falling.