Kelie is of Scottish origin, meaning 'slender'. It is a variant spelling of the Scottish name Keltie. The name gained popularity in the late 20th century and has been used more frequently since then. Kelie is often associated with the Irish surname Keltic, which means 'Irish person'. However, it does not have specific Irish origins. Despite its associations with Scotland and Ireland, Kelie is considered a unisex name, suitable for both boys and girls.
The name Kelie was popular among parents during the late 1950s to early 1970s, with a notable peak in births around 1977. However, its popularity waned significantly after the mid-1970s and has remained relatively low since then, with only occasional peaks in certain years. Overall, Kelie has been given to approximately 273 baby girls over the span of these statistics.