Lillyan is a distinctive girls' name in United States, ranking #4323 in 2020 with 32 recorded births. The name reached its all-time peak in 2009 with 193 births ranking #1265. Since 1996, the popularity has increased by 540.0%. In 2020, approximately 1 in every 50,485 girls born was named Lillyan. FALLING Recent data shows the name is currently falling.