In 2025, 40 US girls were named Ailin, making it the 3,715th most common girls’ name of the year, up 1,736 places from #5,451 in 2024. That is 17 more than the 23 girls named Ailin in 2024. Its best rank for girls was #2,235, reached in 2012. That year also had the most girls given the name: 84. For comparison, it was #2,927 in 2015 and unranked in 1950.
Social Security card records list Ailin in 33 years of the 146 from 1880 to 2025, starting in 1990 with 5 babies. In all, 1,183 US babies have been given the name, 99.5% of them girls and 0.4% boys. Its busiest decade was the 2010s, with 502 babies named Ailin.
Over the 10 years from 2016 to 2025, 307 US girls were named Ailin; the busiest of those years was 2025, with 40. In 2025 that was about 1 in 40,182 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 Aileen (37,642 babies since 1880).