Gustabo is a distinctive boys' name in United States, ranking #7401 in 1999 with 8 recorded births. This places Gustabo in the bottom 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2000 with 21 births ranking #3823. Since 1996, the popularity has decreased by 57.9%. In 1999, approximately 1 in every 240,011 boys born was named Gustabo. FALLING Recent data shows the name is currently falling.