In 2025, 44 US boys were named Thor, making it the 2,875th most common boys’ name of the year, down 50 places from #2,825 in 2024. That is 2 fewer than the 46 boys named Thor in 2024. Its best rank for boys was #883, reached in 1968. The most boys given the name in a single year was 118, in 2015. For comparison, it was #1,442 in 2015 and #2,194 in 1950.
Social Security card records list Thor in 115 years of the 146 from 1880 to 2025, starting in 1904 with 5 babies. In all, 4,857 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 1,026 babies named Thor.
Over the 10 years from 2016 to 2025, 805 US boys were named Thor; the busiest of those years was 2018, with 106. In 2025 that was about 1 in 38,820 of the boys in SSA’s list for the year.
Among the states, Thor ranked highest in California in 2025, at #1,970 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Thorin (2,301 babies since 1880). Rarer spellings such as Tor, Thorn and Thorsten are summarised on this page.