Lillian is a popular girls' name in United States, ranking #57 in 2025 with 3,966 recorded births. The name reached its all-time peak in 2012 with 7,171 births ranking #25. Since 1996, the popularity has increased by 251.9%. In 2025, approximately 1 in every 405 girls born was named Lillian. STABLE Recent data shows the name is currently stable.