Fallon is a distinctive boys' name in United States, ranking #5590 in 1998 with 11 recorded births. The name reached its all-time peak in 2015 with 37 births ranking #3101. Since 1996, the popularity has increased by 120.0%. In 1998, approximately 1 in every 173,756 boys born was named Fallon. FALLING Recent data shows the name is currently falling.