In 2025, 137 US girls were named Cecily, making it the 1,541st most common girls’ name of the year, up 60 places from #1,601 in 2024. That is 6 more than the 131 girls named Cecily in 2024. Its best rank for girls was #498, reached in 1989. That year also had the most girls given the name: 472. For comparison, it was #1,176 in 2015 and #1,414 in 1950.
Social Security card records list Cecily in 110 years of the 146 from 1880 to 2025, starting in 1911 with 5 babies. In all, 8,673 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 1,633 babies named Cecily.
Over the 10 years from 2016 to 2025, 1,457 US girls were named Cecily; the busiest of those years was 2016, with 196. In 2025 that was about 1 in 11,732 of the girls in SSA’s list for the year.
Among the states, Cecily ranked highest in Pennsylvania in 2025, at #879 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Cicely (2,391 babies since 1880), Cecilia (111,688 babies since 1880) and Sicily (1,494 babies since 1880). Rarer spellings such as Cicily, Secily and Cesily are summarised on this page.