Reiley is a distinctive girls' name in United States, ranking #4418 in 2001 with 28 recorded births. The name reached its all-time peak in 1998 with 37 births ranking #3341. Since 1996, the popularity has increased by 33.3%. In 2001, approximately 1 in every 64,306 girls born was named Reiley. FALLING Recent data shows the name is currently falling.