Gianmarco is a distinctive boys' name in United States, ranking #2759 in 2006 with 42 recorded births. The name reached its all-time peak in 2005 with 48 births ranking #2408. Since 1996, the popularity has increased by 366.7%. In 2006, approximately 1 in every 48,931 boys born was named Gianmarco. STABLE Recent data shows the name is currently stable.