Jyllian is a distinctive girls' name in United States, ranking #8037 in 2002 with 13 recorded births. The name reached its all-time peak in 2001 with 23 births ranking #5085. Since 1996, the popularity has increased by 116.7%. In 2002, approximately 1 in every 138,217 girls born was named Jyllian. FALLING Recent data shows the name is currently falling.