Glendon is a distinctive boys' name in United States, ranking #3505 in 1997 with 20 recorded births. This places Glendon in the top 32% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 26 births ranking #4016. In 1997, approximately 1 in every 94,255 boys born was named Glendon. STABLE Recent data shows the name is currently stable.