In 2025, 16 US girls were named Kelsy, making it the 6,981st most common girls’ name of the year, down 1,449 places from #5,532 in 2024. That is 7 fewer than the 23 girls named Kelsy in 2024. Its best rank for girls was #1,104, reached in 1992. That year also had the most girls given the name: 163. For comparison, it was #5,380 in 2015 and unranked in 1950.
Social Security card records list Kelsy in 52 years of the 146 from 1880 to 2025, starting in 1974 with 5 babies. In all, 3,270 US babies have been given the name, 99% of them girls and 1.2% boys. Its busiest decade was the 1990s, with 1,469 babies named Kelsy.
Over the 10 years from 2016 to 2025, 227 US girls were named Kelsy; the busiest of those years was 2018, with 36. In 2025 that was about 1 in 100,454 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), Kelsi (10,151 babies since 1880) and Kelsea (6,040 babies since 1880).