Jaelyn is a distinctive boys' name in United States, ranking #1728 in 1998 with 59 recorded births. The name reached its all-time peak in 2009 with 102 births ranking #1584. Since 1996, the popularity has increased by 321.4%. In 1998, approximately 1 in every 32,395 boys born was named Jaelyn. FALLING Recent data shows the name is currently falling.