Lacy is a distinctive boys' name in United States, ranking #7374 in 2010 with 11 recorded births. The name reached its all-time peak in 2003 with 16 births ranking #4945. Since 1996, the popularity has decreased by 15.4%. In 2010, approximately 1 in every 174,401 boys born was named Lacy. RISING Recent data shows the name is currently rising.