Strong, manly, or free man
Kario is likely a modern variant of the name Karl or Carlo, rooted in the Germanic element 'karal'. It carries the historical connotation of a free man who was not of noble birth but possessed full rights within a tribe.
Less common today
Kario isn't in the latest US Top 1000. It last peaked at #6,461 in 2022.
US births per 5-year period, 1990βpresent (SSA data).