In 2025, 8 US girls were named Caylin, making it the 11,138th most common girls’ name of the year, down 4,142 places from #6,996 in 2024. That is 8 fewer than the 16 girls named Caylin in 2024. Its best rank for girls was #1,330, reached in 1996. The most girls given the name in a single year was 143, in 2009. For comparison, it was #3,143 in 2015 and unranked in 1950.
Social Security card records list Caylin in 44 years of the 146 from 1880 to 2025, starting in 1981 with 6 babies. In all, 2,558 US babies have been given the name, 97% of them girls and 3.4% boys. Its busiest decade was the 2000s, with 963 babies named Caylin.
Over the 10 years from 2016 to 2025, 219 US girls were named Caylin; the busiest of those years was 2016, with 35. In 2025 that was about 1 in 200,908 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Kaylin (19,934 babies since 1880), Callan (12,634 babies since 1880), Kaylyn (12,091 babies since 1880) and Callen (10,105 babies since 1880).