In 2025, 157 US girls were named Delainey, making it the 1,390th most common girls’ name of the year, down 40 places from #1,350 in 2024. That is 12 fewer than the 169 girls named Delainey in 2024. Its best rank for girls was #1,350, reached in 2024. That year also had the most girls given the name: 169. For comparison, it was #2,942 in 2015 and unranked in 1950.
Social Security card records list Delainey in 36 years of the 146 from 1880 to 2025, starting in 1990 with 7 babies. In all, 2,092 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 662 babies named Delainey.
Over the 10 years from 2016 to 2025, 819 US girls were named Delainey; the busiest of those years was 2024, with 169. In 2025 that was about 1 in 10,237 of the girls in SSA’s list for the year.
Among the states, Delainey ranked highest in Maryland in 2025, at #612 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Delaney (46,650 babies since 1880) and Delany (1,408 babies since 1880).