In 2025, 143 US boys were named Caysen, making it the 1,339th most common boys’ name of the year, up 32 places from #1,371 in 2024. That is 6 more than the 137 boys named Caysen in 2024. Its best rank for boys was #1,157, reached in 2022. That year also had the most boys given the name: 178. For comparison, it was #1,388 in 2015 and unranked in 1950.
Social Security card records list Caysen in 27 years of the 146 from 1880 to 2025, starting in 1997 with 5 babies. In all, 2,448 US babies have been given the name, 2.2% of them girls and 98% boys. Its busiest decade was the 2010s, with 1,245 babies named Caysen.
Over the 10 years from 2016 to 2025, 1,519 US boys were named Caysen; the busiest of those years was 2022, with 178. In 2025 that was about 1 in 11,945 of the boys in SSA’s list for the year.
Among the states, Caysen ranked highest in Louisiana in 2025, at #496 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), Kasen (11,538 babies since 1880), Cason (11,388 babies since 1880) and Kaysen (7,075 babies since 1880).