Lacy is a distinctive girls' name in England & Wales, ranking #1958 in 1997 with 8 recorded births. The name reached its all-time peak in 2007 with 36 births ranking #866. Since 1996, the popularity has increased by 60.0%. In 1997, approximately 1 in every 36,648 girls born was named Lacy. RISING Recent data shows the name is currently rising.