In 2025, 81 US boys were named Kaisyn, making it the 1,927th most common boys’ name of the year, down 323 places from #1,604 in 2024. That is 26 fewer than the 107 boys named Kaisyn in 2024. Its best rank for boys was #1,604, reached in 2024. That year also had the most boys given the name: 107. For comparison, it was #3,741 in 2015 and unranked in 1950.
In 2025, 9 US girls were named Kaisyn, making it the 10,482nd most common girls’ name of the year, up 5,931 places from #16,413 in 2024. That is 4 more than the 5 girls named Kaisyn in 2024. Its best rank for girls was #5,547, reached in 2022. That year also had the most girls given the name: 23. For comparison, it was #7,792 in 2015 and unranked in 1950.
Social Security card records list Kaisyn in 17 years of the 146 from 1880 to 2025, starting in 2009 with 10 babies. In all, 1,087 US babies have been given the name, 21% of them girls and 79% boys. Its busiest decade was the 2020s, with 616 babies named Kaisyn.
Over the 10 years from 2016 to 2025, 720 US boys were named Kaisyn; the busiest of those years was 2024, with 107. In 2025 that was about 1 in 21,087 of the boys in SSA’s list for the year.
Among the states, Kaisyn ranked highest in Pennsylvania in 2025, at #1,333 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Kayson (15,487 babies since 1880), Kason (14,951 babies since 1880), Kasen (11,538 babies since 1880) and Kaison (7,198 babies since 1880).