Jailyn is a distinctive girls' name in United States, ranking #1246 in 2010 with 193 recorded births. The name reached its all-time peak in 2007 with 278 births ranking #967. Since 1996, the popularity has increased by 196.9%. In 2010, approximately 1 in every 9,209 girls born was named Jailyn. FALLING Recent data shows the name is currently falling.