Fewer than five US girls were named Katelin in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #539, reached in 1993. That year also had the most girls given the name: 444. For comparison, it was #4,546 in 2015 and unranked in 1950.
Social Security card records list Katelin in 46 years of the 146 from 1880 to 2025, starting in 1977 with 6 babies. In all, 8,917 US babies have been given the name, all of them girls. Its busiest decade was the 1990s, with 4,106 babies named Katelin.
Over the 10 years from 2016 to 2025, 74 US girls were named Katelin; the busiest of those years was 2017, with 20.
Related spellings in the SSA files include Kaitlyn (166,921 babies since 1880), Katelyn (134,206 babies since 1880), Caitlin (112,426 babies since 1880) and Caitlyn (52,637 babies since 1880). Rarer spellings such as Katheline, Catilin and Catalin are summarised on this page. The open nickname list we use links it to Kate, Kay and Kaye.