Langdon is a distinctive boys' name in United States, ranking #3653 in 1999 with 21 recorded births. The name reached its all-time peak in 2005 with 33 births ranking #3133. Since 1996, the popularity has increased by 110.0%. In 1999, approximately 1 in every 91,433 boys born was named Langdon. FALLING Recent data shows the name is currently falling.