In 2025, 134 US girls were named Kaylynn, making it the 1,576th most common girls’ name of the year, down 44 places from #1,532 in 2024. That is 6 fewer than the 140 girls named Kaylynn in 2024. Its best rank for girls was #513, reached in 2009. That year also had the most girls given the name: 590. For comparison, it was #740 in 2015 and unranked in 1950.
Social Security card records list Kaylynn in 73 years of the 146 from 1880 to 2025, starting in 1947 with 8 babies. In all, 12,257 US babies have been given the name, all of them girls. Its busiest decade was the 2000s, with 4,246 babies named Kaylynn.
Over the 10 years from 2016 to 2025, 2,059 US girls were named Kaylynn; the busiest of those years was 2016, with 313. In 2025 that was about 1 in 11,995 of the girls in SSA’s list for the year.
Among the states, Kaylynn ranked highest in Ohio in 2025, at #691 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Kaylyn (12,091 babies since 1880), Kaylin (19,934 babies since 1880), Kaelyn (15,648 babies since 1880) and Kailyn (14,351 babies since 1880). Rarer spellings such as Kaylynne, Caylynn and Kalynne are summarised on this page.