Lilly is a moderately popular girls' name in United States, ranking #219 in 2021 with 1,353 recorded births. The name reached its all-time peak in 2010 with 2,890 births ranking #106. Since 1996, the popularity has increased by 478.2%. In 2021, approximately 1 in every 1,212 girls born was named Lilly. STABLE Recent data shows the name is currently stable.