Katlin is of American origin, derived from the Irish surname 'Caitlín', which itself comes from the Gaelic 'Cait' meaning 'pure'. The name gained popularity in the United States during the 20th century and reached its peak usage in the late 1980s to early 1990s. Katlin is a unique yet approachable choice for parents seeking an uncommon, yet not entirely unfamiliar, name for their daughter.
"Katlin was a popular name for newborn girls from 1984 to 1994, with the most babies named Katlin born in 1985 and 1986. After 1993, its popularity declined significantly, as seen in the decrease of births from 10 in 1993 to just 5 in 1994."