In 2025, 95 US boys were named Denis, making it the 1,712th most common boys’ name of the year, down 69 places from #1,643 in 2024. That is 8 fewer than the 103 boys named Denis in 2024. Its best rank for boys was #277, reached in 1952. That year also had the most boys given the name: 618. For comparison, it was #1,505 in 2015 and #312 in 1950.
Social Security card records list Denis in 141 years of the 146 from 1880 to 2025, starting in 1880 with 10 babies. In all, 21,606 US babies have been given the name, 4.0% of them girls and 96% boys. Its busiest decade was the 1950s, with 5,012 babies named Denis.
Over the 10 years from 2016 to 2025, 996 US boys were named Denis; the busiest of those years was 2019, with 123. In 2025 that was about 1 in 17,980 of the boys in SSA’s list for the year.
Among the states, Denis ranked highest in Maryland in 2025, at #729 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Dennis (623,692 babies since 1880), Denise (374,789 babies since 1880), Denisse (7,370 babies since 1880) and Dennise (3,571 babies since 1880). Rarer spellings such as Deni and Dinos are summarised on this page.