Gustabo is a distinctive boys' name in United States, ranking #5988 in 1998 with 10 recorded births. The name reached its all-time peak in 2000 with 21 births ranking #3823. Since 1996, the popularity has decreased by 47.4%. In 1998, approximately 1 in every 191,132 boys born was named Gustabo. FALLING Recent data shows the name is currently falling.