Gustav is a distinctive boys' name in United States, ranking #2815 in 2009 with 43 recorded births. The name reached its all-time peak in 2019 with 45 births ranking #2776. Since 1996, the popularity has increased by 53.6%. In 2009, approximately 1 in every 46,123 boys born was named Gustav. STABLE Recent data shows the name is currently stable.