Reiley is a distinctive girls' name in United States, ranking #6934 in 2014 with 18 recorded births. The name reached its all-time peak in 1998 with 37 births ranking #3341. Since 1996, the popularity has decreased by 14.3%. In 2014, approximately 1 in every 99,219 girls born was named Reiley. FALLING Recent data shows the name is currently falling.