In 2025, 4,639 US boys were named Silas, making it the 71st most common boys’ name of the year, up 10 places from #81 in 2024. That is 512 more than the 4,127 boys named Silas in 2024. Its best rank for boys was #71, reached in this year, 2025. That year also had the most boys given the name: 4,639. For comparison, it was #128 in 2015 and #631 in 1950.
Social Security card records list Silas in every one of the 146 years from 1880 to 2025; in 1880 there were 98 babies with the name. In all, 75,649 US babies have been given the name, 0.2% of them girls and 99.7% boys. Its busiest decade was the 2010s, with 29,704 babies named Silas.
Over the 10 years from 2016 to 2025, 38,305 US boys were named Silas; the busiest of those years was 2025, with 4,639. In 2025 that was about 1 in 368 of the boys in SSA’s list for the year.
Among the states, Silas ranked highest in West Virginia in 2025, at #19 for boys there. It was in the top 100 in 42 states (counting DC). Related spellings in the SSA files include Sylas (8,966 babies since 1880), Sylus (1,244 babies since 1880), Sylis (1,043 babies since 1880) and Cylas (1,034 babies since 1880). Rarer spellings such as Sila, Silus and Zylas are summarised on this page. The open nickname list we use links it to Si.