Gannon is a distinctive boys' name in United States, ranking #917 in 2005 with 192 recorded births. This places Gannon in the top 7% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2014 with 751 births ranking #414. Since 1996, the popularity has increased by 166.7%. In 2005, approximately 1 in every 10,402 boys born was named Gannon. FALLING Recent data shows the name is currently falling.