Giancarlo is a distinctive boys' name in United States, ranking #641 in 2008 with 381 recorded births. The name reached its all-time peak in 2008 with 381 births ranking #641. Since 1996, the popularity has increased by 202.4%. In 2008, approximately 1 in every 5,354 boys born was named Giancarlo. FALLING Recent data shows the name is currently falling.