Rilley is a distinctive boys' name in United States, ranking #11933 in 2001 with 5 recorded births. This places Rilley in the bottom 3% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 9 births ranking #7500. In 2001, approximately 1 in every 388,566 boys born was named Rilley. STABLE Recent data shows the name is currently stable.