In 2025, 78 US girls were named Caitlin, making it the 2,333rd most common girls’ name of the year, down 649 places from #1,684 in 2024. That is 43 fewer than the 121 girls named Caitlin in 2024. Its best rank for girls was #44, reached in 1988. That year also had the most girls given the name: 7,246. For comparison, it was #610 in 2015 and unranked in 1950.
Social Security card records list Caitlin in 71 years of the 146 from 1880 to 2025, starting in 1955 with 5 babies. In all, 112,426 US babies have been given the name, 99.7% of them girls and 0.3% boys. Its busiest decade was the 1990s, with 49,128 babies named Caitlin.
Over the 10 years from 2016 to 2025, 1,247 US girls were named Caitlin; the busiest of those years was 2016, with 218. In 2025 that was about 1 in 20,606 of the girls in SSA’s list for the year.
Among the states, Caitlin ranked highest in Illinois in 2025, at #1,443 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Kaitlyn (166,921 babies since 1880), Katelyn (134,206 babies since 1880), Caitlyn (52,637 babies since 1880) and Katelynn (30,691 babies since 1880). Rarer spellings such as Caytlin, Caitlinn and Cathlin are summarised on this page. The open nickname list we use links it to Cait and Caity.