In 2025, 37 US girls were named Kelsi, making it the 3,948th most common girls’ name of the year, down 691 places from #3,257 in 2024. That is 12 fewer than the 49 girls named Kelsi in 2024. Its best rank for girls was #410, reached in 1991. That year also had the most girls given the name: 624. For comparison, it was #2,330 in 2015 and unranked in 1950.
Social Security card records list Kelsi in 55 years of the 146 from 1880 to 2025, starting in 1969 with 6 babies. In all, 10,151 US babies have been given the name, all of them girls. Its busiest decade was the 1990s, with 5,054 babies named Kelsi.
Over the 10 years from 2016 to 2025, 675 US girls were named Kelsi; the busiest of those years was 2018, with 112. In 2025 that was about 1 in 43,440 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Kelsey (155,738 babies since 1880), Kelsie (19,936 babies since 1880), Kelsea (6,040 babies since 1880) and Kelcie (3,335 babies since 1880).