Reilley is a distinctive girls' name in United States, ranking #7498 in 2003 with 15 recorded births. The name reached its all-time peak in 2004 with 17 births ranking #7027. Since 1996, the popularity has increased by 200.0%. In 2003, approximately 1 in every 121,803 girls born was named Reilley. RISING Recent data shows the name is currently rising.