Gannon is a distinctive boys' name in United States, ranking #684 in 2003 with 283 recorded births. This places Gannon in the top 5% 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 293.1%. In 2003, approximately 1 in every 6,980 boys born was named Gannon. FALLING Recent data shows the name is currently falling.