Jailyn is a distinctive girls' name in United States, ranking #936 in 2005 with 265 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 307.7%. In 2005, approximately 1 in every 6,972 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.