Shirl is a unique and uncommon female given name of American origin. It is considered a variant spelling of Shirley, which was originally a boys' name derived from the English surname 'Sherley', meaning 'bright, clear'. The name Shirl gained popularity in the mid-20th century but has since become quite rare.
Over the course of these years, Shirl was a notably popular name for newborn girls, with peaks in popularity around the late 1930s to early 1940s and again in the mid-1950s. However, its usage has since declined significantly, as evidenced by the low number of births recorded after 1966.