Glendon is a distinctive boys' name in United States, ranking #3217 in 1999 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 1999, approximately 1 in every 76,803 boys born was named Glendon. STABLE Recent data shows the name is currently stable.