Likely a modern invented name or variant of Cason
Kaysn is a contemporary American invention, likely created as a phonetic variant of Cason or Kayson. It follows the popular trend of combining familiar sounds with unique spellings, often associated with the 'son of' surname suffix or the name Casey.
Less common today
Kaysn isn't in the latest US Top 1000. It last peaked at #8,806 in 2019.
US births per 5-year period, 1990βpresent (SSA data).