Lacy is a distinctive girls' name in England & Wales, ranking #1996 in 2003 with 9 recorded births. The name reached its all-time peak in 2007 with 36 births ranking #866. Since 1996, the popularity has increased by 80.0%. In 2003, approximately 1 in every 30,963 girls born was named Lacy. RISING Recent data shows the name is currently rising.