Reilley is a distinctive girls' name in United States, ranking #16529 in 2010 with 6 recorded births. The name reached its all-time peak in 2004 with 17 births ranking #7027. Since 1996, the popularity has increased by 20.0%. In 2010, approximately 1 in every 296,221 girls born was named Reilley. RISING Recent data shows the name is currently rising.