Jailyn is a distinctive girls' name in United States, ranking #1176 in 1999 with 165 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 153.8%. In 1999, approximately 1 in every 10,750 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.