Giancarlo is a distinctive boys' name in United States, ranking #820 in 1999 with 186 recorded births. The name reached its all-time peak in 2008 with 381 births ranking #641. Since 1996, the popularity has increased by 47.6%. In 1999, approximately 1 in every 10,323 boys born was named Giancarlo. FALLING Recent data shows the name is currently falling.