In 2025, 65 US boys were named Fynn, making it the 2,192nd most common boys’ name of the year, down 264 places from #1,928 in 2024. That is 17 fewer than the 82 boys named Fynn in 2024. Its best rank for boys was #1,481, reached in 2020. The most boys given the name in a single year was 118, in 2022. For comparison, it was #1,533 in 2015 and unranked in 1950.
Social Security card records list Fynn in 26 years of the 146 from 1880 to 2025, starting in 2000 with 14 babies. In all, 1,689 US babies have been given the name, 5.3% of them girls and 95% boys. Its busiest decade was the 2010s, with 912 babies named Fynn.
Over the 10 years from 2016 to 2025, 983 US boys were named Fynn; the busiest of those years was 2022, with 118. In 2025 that was about 1 in 26,278 of the boys in SSA’s list for the year.
Among the states, Fynn ranked highest in Kansas in 2025, at #547 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Finn (35,380 babies since 1880). Rarer spellings such as Phynn are summarised on this page.