Jailyn is a distinctive girls' name in United States, ranking #1297 in 1998 with 138 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 112.3%. In 1998, approximately 1 in every 12,804 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.