Jailyn is a distinctive girls' name in United States, ranking #1021 in 2006 with 251 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 286.2%. In 2006, approximately 1 in every 7,574 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.