Glendon is a distinctive boys' name in United States, ranking #4021 in 2011 with 25 recorded births. The name reached its all-time peak in 2015 with 26 births ranking #4016. Since 1996, the popularity has increased by 19.0%. In 2011, approximately 1 in every 75,960 boys born was named Glendon. STABLE Recent data shows the name is currently stable.