Cailin comes from the Greek / Irish tradition, meaning Pure.
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How popular is Cailin?
2003peak year
Its strongest stretch was the 2000s — when Cailin was at its most popular. At its height in 2003, Cailin reached #1,274 nationally — 164 babies received it that single year. Today, Cailin is a rare name in U.S. records with about 28 babies named Cailin each year. Cailin's usage has fallen in recent decades. In all, around 3,736 babies have been registered as Cailin since 1880.
Year-by-year registrations1880–2024 · U.S. Social Security data
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