Reiley is a distinctive girls' name in United States, ranking #3860 in 2003 with 36 recorded births. The name reached its all-time peak in 1998 with 37 births ranking #3341. Since 1996, the popularity has increased by 71.4%. In 2003, approximately 1 in every 50,751 girls born was named Reiley. FALLING Recent data shows the name is currently falling.