In 2025, 25 US girls were named Marly, making it the 5,179th most common girls’ name of the year, down 1,558 places from #3,621 in 2024. That is 18 fewer than the 43 girls named Marly in 2024. Its best rank for girls was #2,226, reached in 2008. That year also had the most girls given the name: 89. For comparison, it was #3,823 in 2015 and unranked in 1950.
Social Security card records list Marly in 62 years of the 146 from 1880 to 2025, starting in 1949 with 6 babies. In all, 1,665 US babies have been given the name, 99.6% of them girls and 0.3% boys. Its busiest decade was the 2000s, with 502 babies named Marly.
Over the 10 years from 2016 to 2025, 325 US girls were named Marly; the busiest of those years was 2017, with 45. In 2025 that was about 1 in 64,291 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Marley (38,404 babies since 1880), Marlee (17,923 babies since 1880), Marlyn (9,112 babies since 1880) and Marlie (4,542 babies since 1880). Rarer spellings such as Mayerly are summarised on this page.