In 2025, 7 US girls were named Allyn, making it the 12,001st most common girls’ name of the year, up 236 places from #12,237 in 2024. That is 0 more than the 7 girls named Allyn in 2024. Its best rank for girls was #988, reached in 1951. That year also had the most girls given the name: 89. For comparison, it was #6,041 in 2015 and #1,145 in 1950.
Fewer than five US boys were named Allyn in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #780, reached in 1942. The most boys given the name in a single year was 71, in 1947. For comparison, it was #9,621 in 2015 and #1,006 in 1950.
Social Security card records list Allyn in 117 years of the 146 from 1880 to 2025, starting in 1908 with 6 babies. In all, 5,138 US babies have been given the name, 37% of them girls and 63% boys. Its busiest decade was the 1950s, with 913 babies named Allyn.
Over the 10 years from 2016 to 2025, 88 US girls were named Allyn; the busiest of those years was 2016, with 12. In 2025 that was about 1 in 229,610 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Alan (364,389 babies since 1880), Allen (273,662 babies since 1880), Allan (96,711 babies since 1880) and Aylin (16,935 babies since 1880). Rarer spellings such as Ahilyn and Aelynn are summarised on this page.