Lillyan is a distinctive girls' name in United States, ranking #4273 in 2001 with 29 recorded births. The name reached its all-time peak in 2009 with 193 births ranking #1265. Since 1996, the popularity has increased by 480.0%. In 2001, approximately 1 in every 62,088 girls born was named Lillyan. FALLING Recent data shows the name is currently falling.