In 2025, 43 US boys were named Finnan, making it the 2,900th most common boys’ name of the year, down 328 places from #2,572 in 2024. That is 9 fewer than the 52 boys named Finnan in 2024. Its best rank for boys was #2,134, reached in 2023. That year also had the most boys given the name: 68. For comparison, it was unranked (under five boys) in 2015 and unranked in 1950.
Social Security card records list Finnan in 14 years of the 146 from 1880 to 2025, starting in 2005 with 6 babies. In all, 363 US babies have been given the name, all of them boys. Its busiest decade was the 2020s, with 298 babies named Finnan.
Over the 10 years from 2016 to 2025, 311 US boys were named Finnan; the busiest of those years was 2023, with 68. In 2025 that was about 1 in 39,723 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Finnian (3,206 babies since 1880).