In 2025, 12 US girls were named Carlyn, making it the 8,462nd most common girls’ name of the year, down 2,013 places from #6,449 in 2024. That is 6 fewer than the 18 girls named Carlyn in 2024. Its best rank for girls was #952, reached in 1943. The most girls given the name in a single year was 74, in 1992. For comparison, it was #4,513 in 2015 and #1,295 in 1950.
Social Security card records list Carlyn in 117 years of the 146 from 1880 to 2025, starting in 1900 with 5 babies. In all, 4,373 US babies have been given the name, 98% of them girls and 1.5% boys. Its busiest decade was the 1990s, with 619 babies named Carlyn.
Over the 10 years from 2016 to 2025, 173 US girls were named Carlyn; the busiest of those years was 2017, with 28. In 2025 that was about 1 in 133,939 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Carlene (15,225 babies since 1880), Carleen (6,744 babies since 1880) and Carlin (4,565 babies since 1880). Rarer spellings such as Karlynn and Carlyann are summarised on this page.