Katy is a diminutive of Katherine, which is derived from the Greek 'Katharos', meaning 'pure'. The name Katy gained popularity in the mid-20th century and has since been widely used as an independent given name. It is often associated with warmth, approachability, and a certain playful charm. The name Katy has been popular among celebrities and public figures, further contributing to its widespread familiarity and appeal.
"Katy saw five new additions to its population in 1980."