In 2025, 10 US boys were named Thornton, making it the 8,190th most common boys’ name of the year, up 4,015 places from #12,205 in 2024. That is 4 more than the 6 boys named Thornton in 2024. Its best rank for boys was #440, reached in 1888. The most boys given the name in a single year was 75, in 1921. For comparison, it was #8,673 in 2015 and #1,166 in 1950.
Social Security card records list Thornton in 141 years of the 146 from 1880 to 2025, starting in 1880 with 12 babies. In all, 3,132 US babies have been given the name, all of them boys. Its busiest decade was the 1920s, with 551 babies named Thornton.
Over the 10 years from 2016 to 2025, 77 US boys were named Thornton; the busiest of those years was 2017, with 13. In 2025 that was about 1 in 170,808 of the boys in SSA’s list for the year.