In 2025, 185 US girls were named Carolyn, making it the 1,222nd most common girls’ name of the year, down 62 places from #1,160 in 2024. That is 22 fewer than the 207 girls named Carolyn in 2024. Its best rank for girls was #10, reached in 1942. The most girls given the name in a single year was 20,742, in 1947. For comparison, it was #748 in 2015 and #20 in 1950.
Social Security card records list Carolyn in every one of the 146 years from 1880 to 2025; in 1880 there were 80 babies with the name. In all, 558,397 US babies have been given the name, 99.7% of them girls and 0.3% boys. Its busiest decade was the 1940s, with 182,381 babies named Carolyn.
Over the 10 years from 2016 to 2025, 2,575 US girls were named Carolyn; the busiest of those years was 2016, with 352. In 2025 that was about 1 in 8,688 of the girls in SSA’s list for the year.
Among the states, Carolyn ranked highest in Mississippi in 2025, at #452 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Caroline (250,719 babies since 1880), Carolina (48,108 babies since 1880), Karolyn (5,957 babies since 1880) and Karolina (4,676 babies since 1880). Rarer spellings such as Karalyn, Carolin and Caralyn are summarised on this page. The open nickname list we use links it to Carrie, Cassie and Lynn.