Demario is a distinctive boys' name in United States, ranking #1305 in 2008 with 133 recorded births. The name reached its all-time peak in 2008 with 133 births ranking #1305. Since 1996, the popularity has increased by 16.7%. In 2008, approximately 1 in every 15,338 boys born was named Demario. FALLING Recent data shows the name is currently falling.