Jailyn is a distinctive girls' name in United States, ranking #879 in 2002 with 258 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 296.9%. In 2002, approximately 1 in every 6,964 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.