Fallon is a distinctive boys' name in United States, ranking #7288 in 2005 with 10 recorded births. The name reached its all-time peak in 2015 with 37 births ranking #3101. Since 1996, the popularity has increased by 100.0%. In 2005, approximately 1 in every 199,715 boys born was named Fallon. FALLING Recent data shows the name is currently falling.