Leoncio is a distinctive boys' name in United States, ranking #10200 in 2015 with 7 recorded births. The name reached its all-time peak in 2007 with 16 births ranking #5581. Since 1996, the popularity has decreased by 36.4%. In 2015, approximately 1 in every 273,751 boys born was named Leoncio. RISING Recent data shows the name is currently rising.