In 2025, 38 US boys were named Cyril, making it the 3,143rd most common boys’ name of the year, down 138 places from #3,005 in 2024. That is 3 fewer than the 41 boys named Cyril in 2024. Its best rank for boys was #263, reached in 1902. The most boys given the name in a single year was 328, in 1921. For comparison, it was #2,819 in 2015 and #758 in 1950.
Social Security card records list Cyril in 143 years of the 146 from 1880 to 2025, starting in 1880 with 5 babies. In all, 12,131 US babies have been given the name, 0.8% of them girls and 99% boys. Its busiest decade was the 1920s, with 2,702 babies named Cyril.
Over the 10 years from 2016 to 2025, 422 US boys were named Cyril; the busiest of those years was 2018, with 61. In 2025 that was about 1 in 44,949 of the boys in SSA’s list for the year.
Rarer spellings such as Cirilo, Kirill and Cyrill are summarised on this page.