Dillin is of American origin, derived from the Irish surname 'Ó Dubhthaigh', which means 'descendant of the dark-haired chief'. It is a unique and distinctive name that stands out due to its rarity. The name Dillin has been predominantly used in English-speaking countries, with some instances also found in Ireland and Scotland.
"While 'Dillin' peaked in popularity around the early to mid-90s with over 40 births per year, it has since seen a decline, dropping to single digits in recent years. Despite this, the name has maintained some level of consistency with an average of approximately 25 births annually over the past three decades."