Leoncio is a distinctive boys' name in United States, ranking #5470 in 2000 with 13 recorded births. The name reached its all-time peak in 2007 with 16 births ranking #5581. Since 1996, the popularity has increased by 18.2%. In 2000, approximately 1 in every 151,072 boys born was named Leoncio. RISING Recent data shows the name is currently rising.