In 2025, 158 US girls were named Letty, making it the 1,386th most common girls’ name of the year, up 226 places from #1,612 in 2024. That is 28 more than the 130 girls named Letty in 2024. Its best rank for girls was #819, reached in 1892. The most girls given the name in a single year was 163, in 2016. For comparison, it was #1,671 in 2015 and #1,888 in 1950.
Social Security card records list Letty in 136 years of the 146 from 1880 to 2025, starting in 1880 with 5 babies. In all, 4,615 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 987 babies named Letty.
Over the 10 years from 2016 to 2025, 1,426 US girls were named Letty; the busiest of those years was 2016, with 163. In 2025 that was about 1 in 10,173 of the girls in SSA’s list for the year.
Among the states, Letty ranked highest in North Dakota in 2025, at #180 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Lettie (11,097 babies since 1880) and Letti (599 babies since 1880). Rarer spellings such as Lety and Leathy are summarised on this page.