Galen is a distinctive boys' name in United States, ranking #1097 in 1999 with 122 recorded births. The name reached its all-time peak in 1996 with 143 births ranking #917. Since 1996, the popularity has decreased by 14.7%. In 1999, approximately 1 in every 15,738 boys born was named Galen. FALLING Recent data shows the name is currently falling.