Jyllian is a distinctive girls' name in United States, ranking #8847 in 2000 with 11 recorded births. The name reached its all-time peak in 2001 with 23 births ranking #5085. Since 1996, the popularity has increased by 83.3%. In 2000, approximately 1 in every 165,088 girls born was named Jyllian. FALLING Recent data shows the name is currently falling.