Glendon is a distinctive boys' name in United States, ranking #10023 in 2010 with 7 recorded births. This places Glendon in the bottom 30% 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. Since 1996, the popularity has decreased by 66.7%. In 2010, approximately 1 in every 274,059 boys born was named Glendon. STABLE Recent data shows the name is currently stable.