Modern invented name, likely a blend of Da- and Corian.
Dacorian is a contemporary American creation. It likely follows the 20th-century trend of combining the popular prefix 'Da-' with melodic elements like 'Corey' or the suffix '-ian' to create a unique, rhythmic sound.
Less common today
Dacorian isn't in the latest US Top 1000. It last peaked at #8,584 in 2006.
US births per 5-year period, 1990βpresent (SSA data).