In 2025, 8 US girls were named Deidre, making it the 11,176th most common girls’ name of the year. Its best rank for girls was #413, reached in 1963. That year also had the most girls given the name: 541. For comparison, it was #14,971 in 2015 and #701 in 1950.
Social Security card records list Deidre in 86 years of the 146 from 1880 to 2025, starting in 1933 with 5 babies. In all, 14,684 US babies have been given the name, 99.9% of them girls and 0.1% boys. Its busiest decade was the 1960s, with 4,369 babies named Deidre.
Over the 10 years from 2016 to 2025, 28 US girls were named Deidre; the busiest of those years was 2025, with 8. In 2025 that was about 1 in 200,908 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Deirdre (16,845 babies since 1880) and Diedre (1,795 babies since 1880). Rarer spellings such as Deadre, Dedre and Deedre are summarised on this page. The open nickname list we use links it to Deedee.