Reilley is a distinctive girls' name in United States, ranking #7614 in 1999 with 13 recorded births. The name reached its all-time peak in 2004 with 17 births ranking #7027. Since 1996, the popularity has increased by 160.0%. In 1999, approximately 1 in every 136,445 girls born was named Reilley. RISING Recent data shows the name is currently rising.