Lacy is a distinctive girls' name in England & Wales, ranking #866 in 2007 with 36 recorded births. This places Lacy in the top 13% of ranked UK girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2007 with 36 births ranking #866. Since 1996, the popularity has increased by 620.0%. In 2007, approximately 1 in every 8,503 girls born was named Lacy. RISING Recent data shows the name is currently rising.