In 2025, 55 US boys were named Sebastien, making it the 2,473rd most common boys’ name of the year, down 623 places from #1,850 in 2024. That is 33 fewer than the 88 boys named Sebastien in 2024. Its best rank for boys was #1,023, reached in 2001. The most boys given the name in a single year was 178, in 2007. For comparison, it was #1,357 in 2015 and unranked in 1950.
Social Security card records list Sebastien in 54 years of the 146 from 1880 to 2025, starting in 1971 with 11 babies. In all, 4,057 US babies have been given the name, all of them boys. Its busiest decade was the 2000s, with 1,526 babies named Sebastien.
Over the 10 years from 2016 to 2025, 915 US boys were named Sebastien; the busiest of those years was 2016, with 118. In 2025 that was about 1 in 31,056 of the boys in SSA’s list for the year.
Among the states, Sebastien ranked highest in Washington in 2025, at #1,133 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Sebastian (218,463 babies since 1880).