In 2025, 1,618 US girls were named Kaia, making it the 193rd most common girls’ name of the year, down 13 places from #180 in 2024. That is 62 fewer than the 1,680 girls named Kaia in 2024. Its best rank for girls was #180, reached in 2024. That year also had the most girls given the name: 1,680. For comparison, it was #447 in 2015 and unranked in 1950.
Social Security card records list Kaia in 65 years of the 146 from 1880 to 2025, starting in 1955 with 5 babies. In all, 20,967 US babies have been given the name, 99.7% of them girls and 0.3% boys. Its busiest decade was the 2020s, with 8,637 babies named Kaia.
Over the 10 years from 2016 to 2025, 12,586 US girls were named Kaia; the busiest of those years was 2024, with 1,680. In 2025 that was about 1 in 993 of the girls in SSA’s list for the year.
Among the states, Kaia ranked highest in Hawaii in 2025, at #9 for girls there. It was in the top 100 in 4 states (counting DC). Related spellings in the SSA files include Kaya (10,976 babies since 1880), Kia (7,809 babies since 1880), Caia (1,201 babies since 1880) and Kay (102,545 babies since 1880). Rarer spellings such as Kaija, Kaja and Caiya are summarised on this page.