In 2025, 189 US boys were named Lucius, making it the 1,129th most common boys’ name of the year, up 264 places from #1,393 in 2024. That is 54 more than the 135 boys named Lucius in 2024. Its best rank for boys was #259, reached in 1881. The most boys given the name in a single year was 189, in 2025. For comparison, it was #1,300 in 2015 and #786 in 1950.
Social Security card records list Lucius in every one of the 146 years from 1880 to 2025; in 1880 there were 38 babies with the name. In all, 10,108 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 1,314 babies named Lucius.
Over the 10 years from 2016 to 2025, 1,483 US boys were named Lucius; the busiest of those years was 2025, with 189. In 2025 that was about 1 in 9,037 of the boys in SSA’s list for the year.
Among the states, Lucius ranked highest in Iowa in 2025, at #638 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Lucas (331,628 babies since 1880), Luke (323,585 babies since 1880), Luca (79,211 babies since 1880) and Lukas (44,072 babies since 1880). Rarer spellings such as Lucias, Luscious and Lucis are summarised on this page.