Milly is a distinctive girls' name in England & Wales, ranking #608 in 2023 with 62 recorded births. The name reached its all-time peak in 2004 with 460 births ranking #116. Since 1996, the popularity has increased by 26.5%. In 2023, approximately 1 in every 4,138 girls born was named Milly. FALLING Recent data shows the name is currently falling.