Glendon is a distinctive boys' name in United States, ranking #4901 in 2005 with 17 recorded births. The name reached its all-time peak in 2015 with 26 births ranking #4016. Since 1996, the popularity has decreased by 19.0%. In 2005, approximately 1 in every 117,479 boys born was named Glendon. STABLE Recent data shows the name is currently stable.