Jailyn is a distinctive girls' name in United States, ranking #967 in 2007 with 278 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 327.7%. In 2007, approximately 1 in every 6,915 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.