In 2025, 662 US girls were named Madilyn, making it the 464th most common girls’ name of the year, down 43 places from #421 in 2024. That is 79 fewer than the 741 girls named Madilyn in 2024. Its best rank for girls was #287, reached in 2012. The most girls given the name in a single year was 1,169, in 2008. For comparison, it was #316 in 2015 and #4,178 in 1950.
Social Security card records list Madilyn in 58 years of the 146 from 1880 to 2025, starting in 1924 with 7 babies. In all, 23,632 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 10,129 babies named Madilyn.
Over the 10 years from 2016 to 2025, 9,144 US girls were named Madilyn; the busiest of those years was 2021, with 1,019. In 2025 that was about 1 in 2,428 of the girls in SSA’s list for the year.
Among the states, Madilyn ranked highest in Oklahoma in 2025, at #223 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Madelyn (116,060 babies since 1880), Madalyn (23,222 babies since 1880), Madelynn (18,937 babies since 1880) and Madilynn (11,432 babies since 1880). Rarer spellings such as Madilynne are summarised on this page.