In 2025, 95 US boys were named Kainoa, making it the 1,716th most common boys’ name of the year, down 24 places from #1,692 in 2024. That is 4 fewer than the 99 boys named Kainoa in 2024. Its best rank for boys was #1,563, reached in 2005. The most boys given the name in a single year was 105, in 2016. For comparison, it was #1,697 in 2015 and unranked in 1950.
Social Security card records list Kainoa in 49 years of the 146 from 1880 to 2025, starting in 1975 with 6 babies. In all, 2,696 US babies have been given the name, 1.5% of them girls and 99% boys. Its busiest decade was the 2010s, with 877 babies named Kainoa.
Over the 10 years from 2016 to 2025, 908 US boys were named Kainoa; the busiest of those years was 2016, with 105. In 2025 that was about 1 in 17,980 of the boys in SSA’s list for the year.
Among the states, Kainoa ranked highest in Hawaii in 2025, at #59 for boys there. It was in the top 100 in 1 state (counting DC). Rarer spellings such as Kanoa, Kano and Kainoah are summarised on this page.