In 2025, 88 US girls were named Kaci, making it the 2,132nd most common girls’ name of the year, down 55 places from #2,077 in 2024. That is 5 fewer than the 93 girls named Kaci in 2024. Its best rank for girls was #611, reached in 1989. The most girls given the name in a single year was 362, in 1990. For comparison, it was #1,571 in 2015 and unranked in 1950.
In 2025, 11 US boys were named Kaci, making it the 7,411th most common boys’ name of the year, down 776 places from #6,635 in 2024. That is 2 fewer than the 13 boys named Kaci in 2024. Its best rank for boys was #5,488, reached in 1999. The most boys given the name in a single year was 15, in 2022. For comparison, it was #10,068 in 2015 and unranked in 1950.
Social Security card records list Kaci in 61 years of the 146 from 1880 to 2025, starting in 1965 with 5 babies. In all, 10,183 US babies have been given the name, 98% of them girls and 1.7% boys. Its busiest decade was the 1990s, with 2,816 babies named Kaci.
Over the 10 years from 2016 to 2025, 1,235 US girls were named Kaci; the busiest of those years was 2016, with 165. In 2025 that was about 1 in 18,264 of the girls in SSA’s list for the year.
Among the states, Kaci ranked highest in West Virginia in 2025, at #334 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Kacey (15,265 babies since 1880), Kacy (6,047 babies since 1880), Kasie (4,223 babies since 1880) and Kacie (12,839 babies since 1880). Rarer spellings such as Kaysi, Cayci and Kahzi are summarised on this page.