In 2025, 84 US girls were named Addalyn, making it the 2,194th most common girls’ name of the year, down 281 places from #1,913 in 2024. That is 20 fewer than the 104 girls named Addalyn in 2024. Its best rank for girls was #1,026, reached in 2016. The most girls given the name in a single year was 259, in 2015. For comparison, it was #1,030 in 2015 and unranked in 1950.
Social Security card records list Addalyn in 25 years of the 146 from 1880 to 2025, starting in 1998 with 7 babies. In all, 3,086 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 2,031 babies named Addalyn.
Over the 10 years from 2016 to 2025, 1,680 US girls were named Addalyn; the busiest of those years was 2016, with 258. In 2025 that was about 1 in 19,134 of the girls in SSA’s list for the year.
Among the states, Addalyn ranked highest in Washington in 2025, at #1,046 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Adalynn (34,210 babies since 1880), Adalyn (31,014 babies since 1880), Adelyn (23,618 babies since 1880) and Addilyn (9,862 babies since 1880).