In 2025, 33 US girls were named Fallyn, making it the 4,289th most common girls’ name of the year, down 986 places from #3,303 in 2024. That is 15 fewer than the 48 girls named Fallyn in 2024. Its best rank for girls was #2,243, reached in 2015. That year also had the most girls given the name: 84. For comparison, it was #2,243 in 2015 and unranked in 1950.
Social Security card records list Fallyn in 45 years of the 146 from 1880 to 2025, starting in 1981 with 16 babies. In all, 1,577 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 678 babies named Fallyn.
Over the 10 years from 2016 to 2025, 540 US girls were named Fallyn; the busiest of those years was 2016, with 71. In 2025 that was about 1 in 48,705 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Fallon (12,253 babies since 1880) and Falon (2,066 babies since 1880). Rarer spellings such as Faelynn, Faylynn and Phallyn are summarised on this page.