Jyllian is a distinctive girls' name in United States, ranking #8726 in 2008 with 14 recorded births. The name reached its all-time peak in 2001 with 23 births ranking #5085. Since 1996, the popularity has increased by 133.3%. In 2008, approximately 1 in every 135,051 girls born was named Jyllian. FALLING Recent data shows the name is currently falling.