In 2025, 63 US boys were named Sylis, making it the 2,253rd most common boys’ name of the year, up 1,014 places from #3,267 in 2024. That is 26 more than the 37 boys named Sylis in 2024. Its best rank for boys was #1,752, reached in 2013. That year also had the most boys given the name: 84. For comparison, it was #2,224 in 2015 and unranked in 1950.
Social Security card records list Sylis in 26 years of the 146 from 1880 to 2025, starting in 1998 with 5 babies. In all, 1,043 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 596 babies named Sylis.
Over the 10 years from 2016 to 2025, 466 US boys were named Sylis; the busiest of those years was 2016, with 74. In 2025 that was about 1 in 27,112 of the boys in SSA’s list for the year.
Among the states, Sylis ranked highest in Pennsylvania in 2025, at #1,414 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Silas (75,649 babies since 1880), Sylas (8,966 babies since 1880), Sylus (1,244 babies since 1880) and Cylas (1,034 babies since 1880). Rarer spellings such as Celis are summarised on this page.