In 2025, 281 US girls were named Hadlee, making it the 931st most common girls’ name of the year, up 9 places from #940 in 2024. That is 0 more than the 281 girls named Hadlee in 2024. Its best rank for girls was #719, reached in 2016. That year also had the most girls given the name: 396. For comparison, it was #811 in 2015 and unranked in 1950.
Social Security card records list Hadlee in 30 years of the 146 from 1880 to 2025, starting in 1994 with 7 babies. In all, 5,258 US babies have been given the name, 99.5% of them girls and 0.5% boys. Its busiest decade was the 2010s, with 2,797 babies named Hadlee.
Over the 10 years from 2016 to 2025, 3,238 US girls were named Hadlee; the busiest of those years was 2016, with 396. In 2025 that was about 1 in 5,720 of the girls in SSA’s list for the year.
Among the states, Hadlee ranked highest in Alabama in 2025, at #353 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Hadley (48,691 babies since 1880).