In 2025, 5 US boys were named Willam, making it the 13,798th most common boys’ name of the year, down 1,529 places from #12,269 in 2024. That is 1 fewer than the 6 boys named Willam in 2024. Its best rank for boys was #525, reached in 1880. The most boys given the name in a single year was 76, in 1959. For comparison, it was #13,943 in 2015 and #1,167 in 1950.
Social Security card records list Willam in 124 years of the 146 from 1880 to 2025, starting in 1880 with 13 babies. In all, 3,516 US babies have been given the name, all of them boys. Its busiest decade was the 1920s, with 560 babies named Willam.
Over the 10 years from 2016 to 2025, 29 US boys were named Willam; the busiest of those years was 2016, with 7. In 2025 that was about 1 in 341,615 of the boys in SSA’s list for the year.
Related spellings in the SSA files include William (4,215,725 babies since 1880) and Willem (2,840 babies since 1880). Rarer spellings such as Wilem are summarised on this page.