In 2025, 85 US girls were named Marnie, making it the 2,186th most common girls’ name of the year, up 314 places from #2,500 in 2024. That is 13 more than the 72 girls named Marnie in 2024. Its best rank for girls was #428, reached in 1969. That year also had the most girls given the name: 510. For comparison, it was #5,771 in 2015 and #1,862 in 1950.
Social Security card records list Marnie in 97 years of the 146 from 1880 to 2025, starting in 1915 with 9 babies. In all, 6,141 US babies have been given the name, all of them girls. Its busiest decade was the 1970s, with 2,263 babies named Marnie.
Over the 10 years from 2016 to 2025, 519 US girls were named Marnie; the busiest of those years was 2025, with 85. In 2025 that was about 1 in 18,909 of the girls in SSA’s list for the year.
Among the states, Marnie ranked highest in Iowa in 2025, at #549 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Marni (3,420 babies since 1880). Rarer spellings such as Marney, Marnee and Marny are summarised on this page.