In 2025, 1,192 US girls were named Adalyn, making it the 260th most common girls’ name of the year, down 41 places from #219 in 2024. That is 222 fewer than the 1,414 girls named Adalyn in 2024. Its best rank for girls was #132, reached in 2015. That year also had the most girls given the name: 2,456. For comparison, it was #132 in 2015 and unranked in 1950.
Social Security card records list Adalyn in 46 years of the 146 from 1880 to 2025, starting in 1908 with 6 babies. In all, 31,014 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 18,846 babies named Adalyn.
Over the 10 years from 2016 to 2025, 17,805 US girls were named Adalyn; the busiest of those years was 2017, with 2,215. In 2025 that was about 1 in 1,348 of the girls in SSA’s list for the year.
Among the states, Adalyn ranked highest in Mississippi in 2025, at #89 for girls there. It was in the top 100 in 1 state (counting DC). Related spellings in the SSA files include Adalynn (34,210 babies since 1880), Adelyn (23,618 babies since 1880), Adaline (18,766 babies since 1880) and Adelynn (15,023 babies since 1880). Rarer spellings such as Adellyn, Adilen and Aidelyn are summarised on this page.