In 2025, 52 US boys were named Willis, making it the 2,567th most common boys’ name of the year, up 105 places from #2,672 in 2024. That is 2 more than the 50 boys named Willis in 2024. Its best rank for boys was #86, reached in 1880. The most boys given the name in a single year was 1,261, in 1924. For comparison, it was #1,979 in 2015 and #313 in 1950.
Social Security card records list Willis in every one of the 146 years from 1880 to 2025; in 1880 there were 166 babies with the name. In all, 53,154 US babies have been given the name, 1.5% of them girls and 98% boys. Its busiest decade was the 1920s, with 11,944 babies named Willis.
Over the 10 years from 2016 to 2025, 556 US boys were named Willis; the busiest of those years was 2016, with 70. In 2025 that was about 1 in 32,848 of the boys in SSA’s list for the year.
Rarer spellings such as Welles, Willys and Willies are summarised on this page. The open nickname list we use links it to Bill and Willy.