Glendon is a distinctive boys' name in United States, ranking #6934 in 2025 with 12 recorded births. The name reached its all-time peak in 2015 with 26 births ranking #4016. Since 1996, the popularity has decreased by 42.9%. In 2025, approximately 1 in every 142,340 boys born was named Glendon. STABLE Recent data shows the name is currently stable.