Sully is a distinctive boys' name in United States, ranking #5789 in 1998 with 11 recorded births. The name reached its all-time peak in 2011 with 42 births ranking #2843. Since 1996, the popularity has decreased by 26.7%. In 1998, approximately 1 in every 173,756 boys born was named Sully. RISING Recent data shows the name is currently rising.