Fewer than five US girls were named Karyn in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #395, reached in 1964. That year also had the most girls given the name: 607. For comparison, it was #10,491 in 2015 and #586 in 1950.
Social Security card records list Karyn in 86 years of the 146 from 1880 to 2025, starting in 1932 with 6 babies. In all, 14,140 US babies have been given the name, all of them girls. Its busiest decade was the 1960s, with 4,311 babies named Karyn.
Over the 10 years from 2016 to 2025, 84 US girls were named Karyn; the busiest of those years was 2017, with 23.
Related spellings in the SSA files include Karen (990,774 babies since 1880), Karin (28,731 babies since 1880), Caryn (12,182 babies since 1880) and Kary (3,378 babies since 1880). Rarer spellings such as Carynn, Karynne and Carryn are summarised on this page.