In 2025, 2,254 US girls were named Hadley, making it the 121st most common girls’ name of the year, down 6 places from #115 in 2024. That is 130 fewer than the 2,384 girls named Hadley in 2024. Its best rank for girls was #100, reached in 2014. That year also had the most girls given the name: 3,015. For comparison, it was #103 in 2015 and unranked in 1950.
Social Security card records list Hadley in 119 years of the 146 from 1880 to 2025, starting in 1906 with 6 babies. In all, 48,691 US babies have been given the name, 96% of them girls and 4.3% boys. Its busiest decade was the 2010s, with 25,871 babies named Hadley.
Over the 10 years from 2016 to 2025, 25,440 US girls were named Hadley; the busiest of those years was 2016, with 2,888. In 2025 that was about 1 in 713 of the girls in SSA’s list for the year.
Among the states, Hadley ranked highest in Montana in 2025, at #19 for girls there. It was in the top 100 in 25 states (counting DC). Related spellings in the SSA files include Hadlee (5,258 babies since 1880). Rarer spellings such as Hadlie, Hadli and Hadlei are summarised on this page.