In 2025, 247 US boys were named Josias, making it the 950th most common boys’ name of the year, up 89 places from #1,039 in 2024. That is 33 more than the 214 boys named Josias in 2024. Its best rank for boys was #950, reached in this year, 2025. That year also had the most boys given the name: 247. For comparison, it was #1,236 in 2015 and unranked in 1950.
Social Security card records list Josias in 47 years of the 146 from 1880 to 2025, starting in 1975 with 5 babies. In all, 3,517 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 1,245 babies named Josias.
Over the 10 years from 2016 to 2025, 1,765 US boys were named Josias; the busiest of those years was 2025, with 247. In 2025 that was about 1 in 6,915 of the boys in SSA’s list for the year.
Among the states, Josias ranked highest in New Jersey in 2025, at #503 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Josiah (149,420 babies since 1880). Rarer spellings such as Josiahs, Joses and Jozias are summarised on this page.