In 2025, 148 US boys were named Cian, making it the 1,310th most common boys’ name of the year, up 220 places from #1,530 in 2024. That is 33 more than the 115 boys named Cian in 2024. Its best rank for boys was #1,039, reached in 2007. That year also had the most boys given the name: 181. For comparison, it was #1,192 in 2015 and unranked in 1950.
Social Security card records list Cian in 45 years of the 146 from 1880 to 2025, starting in 1976 with 5 babies. In all, 3,751 US babies have been given the name, 0.7% of them girls and 99% boys. Its busiest decade was the 2010s, with 1,413 babies named Cian.
Over the 10 years from 2016 to 2025, 1,384 US boys were named Cian; the busiest of those years was 2017, with 163. In 2025 that was about 1 in 11,541 of the boys in SSA’s list for the year.
Among the states, Cian ranked highest in Massachusetts in 2025, at #560 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Kian (13,568 babies since 1880), Sean (426,606 babies since 1880), Zion (53,897 babies since 1880) and Zyan (2,074 babies since 1880). Rarer spellings such as Cyann, Cianne and Cyane are summarised on this page.