In 2025, 11 US boys were named Seymour, making it the 7,594th most common boys’ name of the year, up 3,161 places from #10,755 in 2024. That is 4 more than the 7 boys named Seymour in 2024. Its best rank for boys was #182, reached in 1924. That year also had the most boys given the name: 786. For comparison, it was unranked (under five boys) in 2015 and #1,427 in 1950.
Social Security card records list Seymour in 128 years of the 146 from 1880 to 2025, starting in 1880 with 14 babies. In all, 13,122 US babies have been given the name, 0.1% of them girls and 99.9% boys. Its busiest decade was the 1920s, with 6,543 babies named Seymour.
Over the 10 years from 2016 to 2025, 59 US boys were named Seymour; the busiest of those years was 2025, with 11. In 2025 that was about 1 in 155,280 of the boys in SSA’s list for the year.
Rarer spellings such as Seymore and Seymoure are summarised on this page. The open nickname list we use links it to Morey and See.