Reiley is a distinctive girls' name in United States, ranking #4785 in 2009 with 31 recorded births. The name reached its all-time peak in 1998 with 37 births ranking #3341. Since 1996, the popularity has increased by 47.6%. In 2009, approximately 1 in every 59,254 girls born was named Reiley. FALLING Recent data shows the name is currently falling.