Gannon is a distinctive boys' name in United States, ranking #1102 in 2001 with 129 recorded births. The name reached its all-time peak in 2014 with 751 births ranking #414. Since 1996, the popularity has increased by 79.2%. In 2001, approximately 1 in every 15,061 boys born was named Gannon. FALLING Recent data shows the name is currently falling.