In 2025, 203 US boys were named Billy, making it the 1,068th most common boys’ name of the year, down 17 places from #1,051 in 2024. That is 7 fewer than the 210 boys named Billy in 2024. Its best rank for boys was #19, reached in 1935. The most boys given the name in a single year was 9,562, in 1934. For comparison, it was #810 in 2015 and #57 in 1950.
Social Security card records list Billy in 145 years of the 146 from 1880 to 2025, starting in 1880 with 7 babies. In all, 389,665 US babies have been given the name, 1.4% of them girls and 99% boys. Its busiest decade was the 1930s, with 89,443 babies named Billy.
Over the 10 years from 2016 to 2025, 2,285 US boys were named Billy; the busiest of those years was 2017, with 268. In 2025 that was about 1 in 8,414 of the boys in SSA’s list for the year.
Among the states, Billy ranked highest in Mississippi in 2025, at #372 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Billie (135,300 babies since 1880), Billye (3,472 babies since 1880) and Billi (1,746 babies since 1880). Rarer spellings such as Billee, Billey and Beily are summarised on this page. The open nickname list we use links it to Fred, Robert and William.