In 2025, 1,577 US boys were named Kairo, making it the 226th most common boys’ name of the year, up 12 places from #238 in 2024. That is 94 more than the 1,483 boys named Kairo in 2024. Its best rank for boys was #226, reached in this year, 2025. That year also had the most boys given the name: 1,577. For comparison, it was #1,819 in 2015 and unranked in 1950.
Social Security card records list Kairo in 31 years of the 146 from 1880 to 2025, starting in 1995 with 6 babies. In all, 11,519 US babies have been given the name, 2.6% of them girls and 97% boys. Its busiest decade was the 2020s, with 8,694 babies named Kairo.
Over the 10 years from 2016 to 2025, 10,632 US boys were named Kairo; the busiest of those years was 2025, with 1,577. In 2025 that was about 1 in 1,083 of the boys in SSA’s list for the year.
Among the states, Kairo ranked highest in District of Columbia in 2025, at #69 for boys there. It was in the top 100 in 3 states (counting DC). Related spellings in the SSA files include Cairo (9,999 babies since 1880). Rarer spellings such as Kaoru, Karo and Kayro are summarised on this page.