Reiley is a distinctive girls' name in United States, ranking #3341 in 1998 with 37 recorded births. The name reached its all-time peak in 1998 with 37 births ranking #3341. Since 1996, the popularity has increased by 76.2%. In 1998, approximately 1 in every 47,754 girls born was named Reiley. FALLING Recent data shows the name is currently falling.