In 2025, 225 US girls were named Katelyn, making it the 1,077th most common girls’ name of the year, down 151 places from #926 in 2024. That is 61 fewer than the 286 girls named Katelyn in 2024. Its best rank for girls was #52, reached in 2001. The most girls given the name in a single year was 5,975, in 1993. For comparison, it was #239 in 2015 and unranked in 1950.
Social Security card records list Katelyn in 56 years of the 146 from 1880 to 2025, starting in 1970 with 9 babies. In all, 134,206 US babies have been given the name, 99.8% of them girls and 0.1% boys. Its busiest decade was the 1990s, with 52,863 babies named Katelyn.
Over the 10 years from 2016 to 2025, 4,765 US girls were named Katelyn; the busiest of those years was 2016, with 871. In 2025 that was about 1 in 7,143 of the girls in SSA’s list for the year.
Among the states, Katelyn ranked highest in Utah in 2025, at #511 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), Caitlin (112,426 babies since 1880), Caitlyn (52,637 babies since 1880) and Katelynn (30,691 babies since 1880). Rarer spellings such as Catelynn, Katelyne and Katilynn are summarised on this page. The open nickname list we use links it to Kate, Kay and Kaye.