Lacy is a distinctive girls' name in England & Wales, ranking #1702 in 2014 with 17 recorded births. The name reached its all-time peak in 2007 with 36 births ranking #866. Since 1996, the popularity has increased by 240.0%. In 2014, approximately 1 in every 18,039 girls born was named Lacy. RISING Recent data shows the name is currently rising.