In 2025, 79 US boys were named Justus, making it the 1,952nd most common boys’ name of the year, down 139 places from #1,813 in 2024. That is 11 fewer than the 90 boys named Justus in 2024. Its best rank for boys was #589, reached in 1880. The most boys given the name in a single year was 300, in 2007. For comparison, it was #861 in 2015 and #3,504 in 1950.
Social Security card records list Justus in 124 years of the 146 from 1880 to 2025, starting in 1880 with 11 babies. In all, 9,958 US babies have been given the name, 8.2% of them girls and 92% boys. Its busiest decade was the 2000s, with 3,053 babies named Justus.
Over the 10 years from 2016 to 2025, 1,645 US boys were named Justus; the busiest of those years was 2016, with 236. In 2025 that was about 1 in 21,621 of the boys in SSA’s list for the year.
Among the states, Justus ranked highest in Virginia in 2025, at #836 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Justis (1,924 babies since 1880). Rarer spellings such as Justise, Justiss and Justess are summarised on this page.