Glendon is a distinctive boys' name in United States, ranking #3821 in 2000 with 21 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 2000, approximately 1 in every 93,521 boys born was named Glendon. STABLE Recent data shows the name is currently stable.