Reilly is a distinctive boys' name in United States, ranking #1671 in 2016 with 95 recorded births. This places Reilly in the top 12% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 218 births ranking #911. Since 1996, the popularity has decreased by 33.6%. In 2016, approximately 1 in every 19,971 boys born was named Reilly. FALLING Recent data shows the name is currently falling.