In 2025, 78 US girls were named Delta, making it the 2,337th most common girls’ name of the year, down 68 places from #2,269 in 2024. That is 4 fewer than the 82 girls named Delta in 2024. Its best rank for girls was #723, reached in 1893. The most girls given the name in a single year was 136, in 2019. For comparison, it was #3,864 in 2015 and #2,271 in 1950.
Social Security card records list Delta in 142 years of the 146 from 1880 to 2025, starting in 1883 with 7 babies. In all, 4,476 US babies have been given the name, 98% of them girls and 2.4% boys. Its busiest decade was the 2020s, with 565 babies named Delta.
Over the 10 years from 2016 to 2025, 899 US girls were named Delta; the busiest of those years was 2019, with 136. In 2025 that was about 1 in 20,606 of the girls in SSA’s list for the year.
Among the states, Delta ranked highest in Mississippi in 2025, at #277 for girls there. It was not in the top 100 of any state. Rarer spellings such as Deltha are summarised on this page.