Jailyn is a distinctive girls' name in United States, ranking #963 in 2001 with 226 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 247.7%. In 2001, approximately 1 in every 7,967 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.