Rheagan is a distinctive girls' name in United States, ranking #12907 in 2025 with 7 recorded births. The name reached its all-time peak in 2004 with 31 births ranking #4465. Since 1996, the popularity has decreased by 36.4%. In 2025, approximately 1 in every 229,610 girls born was named Rheagan. FALLING Recent data shows the name is currently falling.