Jyllian is a distinctive girls' name in United States, ranking #10100 in 2010 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 2010, approximately 1 in every 161,575 girls born was named Jyllian. FALLING Recent data shows the name is currently falling.