In 2025, 851 US girls were named Adelyn, making it the 355th most common girls’ name of the year, down 41 places from #314 in 2024. That is 127 fewer than the 978 girls named Adelyn in 2024. Its best rank for girls was #194, reached in 2016. The most girls given the name in a single year was 1,680, in 2015. For comparison, it was #196 in 2015 and unranked in 1950.
Social Security card records list Adelyn in 80 years of the 146 from 1880 to 2025, starting in 1899 with 5 babies. In all, 23,618 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 13,979 babies named Adelyn.
Over the 10 years from 2016 to 2025, 12,284 US girls were named Adelyn; the busiest of those years was 2016, with 1,672. In 2025 that was about 1 in 1,889 of the girls in SSA’s list for the year.
Among the states, Adelyn ranked highest in Kansas in 2025, at #213 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Adeline (80,838 babies since 1880), Adalynn (34,210 babies since 1880), Adalyn (31,014 babies since 1880) and Adelynn (15,023 babies since 1880). Rarer spellings such as Adelean and Adeleen are summarised on this page.