Lillyan is a distinctive girls' name in United States, ranking #5965 in 1998 with 17 recorded births. The name reached its all-time peak in 2009 with 193 births ranking #1265. Since 1996, the popularity has increased by 240.0%. In 1998, approximately 1 in every 103,935 girls born was named Lillyan. FALLING Recent data shows the name is currently falling.