Likely a modern variation of Cason or Jason
Caycen is a contemporary American invention, likely created by blending the popular 'Cay-' prefix with the 'son' or 'cen' suffix. It follows the trend of phonetic, surname-style names and is often viewed as a creative spelling of Cason, which can mean 'son of Case' or 'marsh-dweller'.
Less common today
Caycen isn't in the latest US Top 1000. It last peaked at #8,122 in 2012.
US births per 5-year period, 1990βpresent (SSA data).