Derived from Caston or Casten, meaning from the town of Chasten
Kastyn is a modern American invention, likely a phonetic variation of the English surname Caston or a creative blend of names like Kason and Austin. As a surname derivative, it historically points to various English localities. It follows the contemporary trend of replacing vowels with 'y' to create a unique, gender-neutral identity.
Less common today
Kastyn isn't in the latest US Top 1000. It last peaked at #11,896 in 2019.
US births per 5-year period, 1990–present (SSA data).
