Lacy is a distinctive girls' name in United States, ranking #1550 in 2011 with 142 recorded births. The name reached its all-time peak in 2003 with 297 births ranking #826. Since 1996, the popularity has decreased by 48.6%. In 2011, approximately 1 in every 12,386 girls born was named Lacy. RISING Recent data shows the name is currently rising.