Lacy is a distinctive girls' name in England & Wales, ranking #1031 in 2006 with 27 recorded births. The name reached its all-time peak in 2007 with 36 births ranking #866. Since 1996, the popularity has increased by 440.0%. In 2006, approximately 1 in every 11,083 girls born was named Lacy. RISING Recent data shows the name is currently rising.