Reilley is a distinctive girls' name in United States, ranking #8432 in 2000 with 12 recorded births. The name reached its all-time peak in 2004 with 17 births ranking #7027. Since 1996, the popularity has increased by 140.0%. In 2000, approximately 1 in every 151,331 girls born was named Reilley. RISING Recent data shows the name is currently rising.