In 2025, 22 US girls were named Marlyn, making it the 5,653rd most common girls’ name of the year, up 667 places from #6,320 in 2024. That is 3 more than the 19 girls named Marlyn in 2024. Its best rank for girls was #464, reached in 1936. That year also had the most girls given the name: 193. For comparison, it was #3,688 in 2015 and #967 in 1950.
Fewer than five US boys were named Marlyn in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #601, reached in 1935. That year also had the most boys given the name: 94. For comparison, it was #13,330 in 2015 and #1,384 in 1950.
Social Security card records list Marlyn in 113 years of the 146 from 1880 to 2025, starting in 1913 with 7 babies. In all, 9,112 US babies have been given the name, 75% of them girls and 25% boys. Its busiest decade was the 1930s, with 2,311 babies named Marlyn.
Over the 10 years from 2016 to 2025, 240 US girls were named Marlyn; the busiest of those years was 2016, with 38. In 2025 that was about 1 in 73,058 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Marilyn (374,857 babies since 1880), Marley (38,404 babies since 1880), Marlin (22,834 babies since 1880) and Marly (1,665 babies since 1880).