In 2025, 28 US boys were named Kailan, making it the 3,896th most common boys’ name of the year, down 1,044 places from #2,852 in 2024. That is 17 fewer than the 45 boys named Kailan in 2024. Its best rank for boys was #2,846, reached in 2022. The most boys given the name in a single year was 45, in 2024. For comparison, it was #5,171 in 2015 and unranked in 1950.
In 2025, 7 US girls were named Kailan, making it the 12,512th most common girls’ name of the year, down 2,633 places from #9,879 in 2024. That is 3 fewer than the 10 girls named Kailan in 2024. Its best rank for girls was #3,984, reached in 2009. That year also had the most girls given the name: 39. For comparison, it was #7,116 in 2015 and unranked in 1950.
Social Security card records list Kailan in 38 years of the 146 from 1880 to 2025, starting in 1988 with 7 babies. In all, 1,118 US babies have been given the name, 46% of them girls and 54% boys. Its busiest decade was the 2010s, with 364 babies named Kailan.
Over the 10 years from 2016 to 2025, 293 US boys were named Kailan; the busiest of those years was 2024, with 45. In 2025 that was about 1 in 61,003 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Kaylin (19,934 babies since 1880), Kaelyn (15,648 babies since 1880), Kailyn (14,351 babies since 1880) and Callan (12,634 babies since 1880).