Gianmarco is a distinctive boys' name in United States, ranking #3937 in 2014 with 26 recorded births. The name reached its all-time peak in 2005 with 48 births ranking #2408. Since 1996, the popularity has increased by 188.9%. In 2014, approximately 1 in every 73,863 boys born was named Gianmarco. STABLE Recent data shows the name is currently stable.