Fewer than five US girls were named Katlin in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #603, reached in 1993. That year also had the most girls given the name: 385. For comparison, it was #12,405 in 2015 and unranked in 1950.
Social Security card records list Katlin in 35 years of the 146 from 1880 to 2025, starting in 1981 with 9 babies. In all, 5,461 US babies have been given the name, 98% of them girls and 2.3% boys. Its busiest decade was the 1990s, with 3,352 babies named Katlin.
In none of the 10 years from 2016 to 2025 were five or more US girls named Katlin.
Related spellings in the SSA files include Kaitlyn (166,921 babies since 1880), Caitlin (112,426 babies since 1880), Kaitlin (57,430 babies since 1880) and Katlyn (18,438 babies since 1880). Rarer spellings such as Kathline are summarised on this page.