Jailyn is a distinctive girls' name in United States, ranking #1779 in 2014 with 116 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 78.5%. In 2014, approximately 1 in every 15,396 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.