Riley is of Irish origin, derived from the surname Ó Raghallaigh, which translates to 'descendant of Ragallach'. This surname is believed to have been borne by a warrior, as it means 'little king'. The name Riley has gained significant popularity in recent years, particularly in English-speaking countries. It is often used for both boys and girls due to its unisex nature, although it was initially more associated with males. The name Riley is simple yet strong, making it a popular choice among parents seeking a distinctive yet timeless moniker for their child.
Rilley experienced peak popularity with 8 births each in 2009 and 2011-2012, while the last two years (2021) saw a slight decrease to 5 births.