Lacy is a distinctive girls' name in England & Wales, ranking #3409 in 2002 with 4 recorded births. The name reached its all-time peak in 2007 with 36 births ranking #866. Since 1996, the popularity has decreased by 20.0%. In 2002, approximately 1 in every 66,842 girls born was named Lacy. RISING Recent data shows the name is currently rising.