Jailyn is a distinctive girls' name in United States, ranking #1556 in 2015 with 141 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 116.9%. In 2015, approximately 1 in every 12,657 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.