Jyllian is a distinctive girls' name in United States, ranking #14806 in 1997 with 5 recorded births. The name reached its all-time peak in 2001 with 23 births ranking #5085. Since 1996, the popularity has decreased by 16.7%. In 1997, approximately 1 in every 348,132 girls born was named Jyllian. FALLING Recent data shows the name is currently falling.