In 2025, 349 US girls were named Fallon, making it the 779th most common girls’ name of the year, down 41 places from #738 in 2024. That is 33 fewer than the 382 girls named Fallon in 2024. Its best rank for girls was #376, reached in 1982. That year also had the most girls given the name: 611. For comparison, it was #1,126 in 2015 and unranked in 1950.
Social Security card records list Fallon in 46 years of the 146 from 1880 to 2025, starting in 1972 with 5 babies. In all, 12,253 US babies have been given the name, 95% of them girls and 5.1% boys. Its busiest decade was the 1980s, with 3,396 babies named Fallon.
Over the 10 years from 2016 to 2025, 3,239 US girls were named Fallon; the busiest of those years was 2023, with 422. In 2025 that was about 1 in 4,605 of the girls in SSA’s list for the year.
Among the states, Fallon ranked highest in West Virginia in 2025, at #189 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Falon (2,066 babies since 1880) and Fallyn (1,577 babies since 1880). Rarer spellings such as Falyn, Falynn and Faelyn are summarised on this page. The open nickname list we use links it to Fal, Falcon, Fall, Fallie, Fally and Falon.