Jailyn is a distinctive girls' name in United States, ranking #1405 in 2011 with 163 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 150.8%. In 2011, approximately 1 in every 10,790 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.