Jailyn is a distinctive girls' name in United States, ranking #986 in 2000 with 215 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 230.8%. In 2000, approximately 1 in every 8,446 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.