Lacy ranked #5320 among U.S. baby names in 2024. Since 1880, 26,616 babies have been named Lacy, peaking in 1982 with 1,015 births. The 1980s were its biggest decade, with 8,699 births. Its use has been declining, down about 40% over the past five years. Lacy is given to both girls and boys.