Modern invented name, likely a blend of Jacob and Darius.
Jakarius is a modern American creation, likely formed by combining the popular prefix 'Ja-' with the suffix '-karius' from names like Darius or Zacchaeus. It follows the contemporary trend of creating rhythmic, multi-syllabic names that sound established yet remain unique. Because it is a modern invention, it lacks a singular traditional etymology.
Less common today
Jakarius isn't in the latest US Top 1000. It last peaked at #5,961 in 2001.
US births per 5-year period, 1990βpresent (SSA data).