In 2025, 35 US girls were named Kaitlin, making it the 4,114th most common girls’ name of the year, up 843 places from #4,957 in 2024. That is 8 more than the 27 girls named Kaitlin in 2024. Its best rank for girls was #93, reached in 1994. The most girls given the name in a single year was 3,602, in 1995. For comparison, it was #1,332 in 2015 and unranked in 1950.
Social Security card records list Kaitlin in 54 years of the 146 from 1880 to 2025, starting in 1971 with 7 babies. In all, 57,430 US babies have been given the name, 99.8% of them girls and 0.1% boys. Its busiest decade was the 1990s, with 30,852 babies named Kaitlin.
Over the 10 years from 2016 to 2025, 480 US girls were named Kaitlin; the busiest of those years was 2016, with 81. In 2025 that was about 1 in 45,922 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Kaitlyn (166,921 babies since 1880), Caitlin (112,426 babies since 1880), Caitlyn (52,637 babies since 1880) and Katlyn (18,438 babies since 1880). Rarer spellings such as Katline, Kaytlinn and Katlain are summarised on this page. The open nickname list we use links it to Kait and Kaitie.