In 2025, 101 US girls were named Heidy, making it the 1,917th most common girls’ name of the year, down 105 places from #1,812 in 2024. That is 10 fewer than the 111 girls named Heidy in 2024. Its best rank for girls was #809, reached in 2010. That year also had the most girls given the name: 338. For comparison, it was #1,603 in 2015 and unranked in 1950.
Social Security card records list Heidy in 71 years of the 146 from 1880 to 2025, starting in 1955 with 5 babies. In all, 6,085 US babies have been given the name, all of them girls. Its busiest decade was the 2000s, with 2,169 babies named Heidy.
Over the 10 years from 2016 to 2025, 1,165 US girls were named Heidy; the busiest of those years was 2019, with 134. In 2025 that was about 1 in 15,914 of the girls in SSA’s list for the year.
Among the states, Heidy ranked highest in New York in 2025, at #1,190 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Heidi (149,687 babies since 1880) and Hedy (2,316 babies since 1880).