Reilly is a distinctive boys' name in England & Wales, ranking #617 in 2006 with 46 recorded births. The name reached its all-time peak in 2012 with 63 births ranking #569. Since 1996, the popularity has increased by 1,050.0%. In 2006, approximately 1 in every 6,964 boys born was named Reilly. FALLING Recent data shows the name is currently falling.