Reiley is a distinctive girls' name in United States, ranking #4268 in 2000 with 29 recorded births. The name reached its all-time peak in 1998 with 37 births ranking #3341. Since 1996, the popularity has increased by 38.1%. In 2000, approximately 1 in every 62,620 girls born was named Reiley. FALLING Recent data shows the name is currently falling.