Jailyn is a distinctive girls' name in United States, ranking #938 in 2004 with 256 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 293.8%. In 2004, approximately 1 in every 7,172 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.