In 2025, 23 US boys were named Izak, making it the 4,449th most common boys’ name of the year, up 36 places from #4,485 in 2024. That is 0 more than the 23 boys named Izak in 2024. Its best rank for boys was #1,423, reached in 2005. The most boys given the name in a single year was 105, in 2008. For comparison, it was #2,658 in 2015 and unranked in 1950.
Social Security card records list Izak in 40 years of the 146 from 1880 to 2025, starting in 1984 with 5 babies. In all, 1,841 US babies have been given the name, all of them boys. Its busiest decade was the 2000s, with 865 babies named Izak.
Over the 10 years from 2016 to 2025, 313 US boys were named Izak; the busiest of those years was 2018, with 38. In 2025 that was about 1 in 74,264 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Isaac (332,292 babies since 1880), Isaak (4,271 babies since 1880), Isac (3,203 babies since 1880) and Izaak (2,889 babies since 1880). Rarer spellings such as Eizik are summarised on this page.