In 2025, 12 US boys were named Delbert, making it the 6,901st most common boys’ name of the year, down 645 places from #6,256 in 2024. That is 2 fewer than the 14 boys named Delbert in 2024. Its best rank for boys was #150, reached in 1920. The most boys given the name in a single year was 1,038, in 1932. For comparison, it was #4,432 in 2015 and #278 in 1950.
Social Security card records list Delbert in every one of the 146 years from 1880 to 2025; in 1880 there were 44 babies with the name. In all, 47,056 US babies have been given the name, 0.3% of them girls and 99.7% boys. Its busiest decade was the 1920s, with 9,736 babies named Delbert.
Over the 10 years from 2016 to 2025, 180 US boys were named Delbert; the busiest of those years was 2020, with 26. In 2025 that was about 1 in 142,340 of the boys in SSA’s list for the year.
Rarer spellings such as Dilbert are summarised on this page. The open nickname list we use links it to Bert and Del.