In 2025, 67 US girls were named Lacy, making it the 2,597th most common girls’ name of the year, up 438 places from #3,035 in 2024. That is 13 more than the 54 girls named Lacy in 2024. Its best rank for girls was #243, reached in 1983. The most girls given the name in a single year was 988, in 1982. For comparison, it was #1,444 in 2015 and #2,838 in 1950.
Fewer than five US boys were named Lacy in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #392, reached in 1900. The most boys given the name in a single year was 125, in 1924. For comparison, it was #13,207 in 2015 and #718 in 1950.
Social Security card records list Lacy in every one of the 146 years from 1880 to 2025; in 1880 there were 15 babies with the name. In all, 26,685 US babies have been given the name, 76% of them girls and 24% boys. Its busiest decade was the 1980s, with 8,699 babies named Lacy.
Over the 10 years from 2016 to 2025, 812 US girls were named Lacy; the busiest of those years was 2016, with 119. In 2025 that was about 1 in 23,989 of the girls in SSA’s list for the year.
Among the states, Lacy ranked highest in Texas in 2025, at #2,140 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Lacey (55,233 babies since 1880), Lacie (10,831 babies since 1880), Laci (9,623 babies since 1880) and Lacee (2,557 babies since 1880). Rarer spellings such as Lasya, Layci and Laici are summarised on this page.