Lacy is a distinctive girls' name in United States, ranking #917 in 1999 with 231 recorded births. The name reached its all-time peak in 2003 with 297 births ranking #826. Since 1996, the popularity has decreased by 16.3%. In 1999, approximately 1 in every 7,679 girls born was named Lacy. RISING Recent data shows the name is currently rising.