In 2025, 439 US boys were named Izaiah, making it the 635th most common boys’ name of the year, down 27 places from #608 in 2024. That is 29 fewer than the 468 boys named Izaiah in 2024. Its best rank for boys was #390, reached in 2011. The most boys given the name in a single year was 744, in 2009. For comparison, it was #538 in 2015 and unranked in 1950.
Social Security card records list Izaiah in 40 years of the 146 from 1880 to 2025, starting in 1984 with 9 babies. In all, 14,909 US babies have been given the name, 0.1% of them girls and 99.9% boys. Its busiest decade was the 2010s, with 6,051 babies named Izaiah.
Over the 10 years from 2016 to 2025, 5,135 US boys were named Izaiah; the busiest of those years was 2020, with 602. In 2025 that was about 1 in 3,891 of the boys in SSA’s list for the year.
Among the states, Izaiah ranked highest in New Mexico in 2025, at #283 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Isaiah (254,710 babies since 1880), Izayah (4,276 babies since 1880), Isaih (1,510 babies since 1880) and Izaya (1,086 babies since 1880). Rarer spellings such as Izaiha, Izzah and Izaha are summarised on this page.