In 2025, 18 US boys were named Vasilios, making it the 5,377th most common boys’ name of the year, up 789 places from #6,166 in 2024. That is 3 more than the 15 boys named Vasilios in 2024. Its best rank for boys was #1,301, reached in 1975. That year also had the most boys given the name: 45. For comparison, it was #4,168 in 2015 and unranked in 1950.
Social Security card records list Vasilios in 66 years of the 146 from 1880 to 2025, starting in 1923 with 6 babies. In all, 1,500 US babies have been given the name, all of them boys. Its busiest decade was the 1970s, with 315 babies named Vasilios.
Over the 10 years from 2016 to 2025, 159 US boys were named Vasilios; the busiest of those years was 2016, with 25. In 2025 that was about 1 in 94,893 of the boys in SSA’s list for the year.