Fewer than five US girls were named Krystin in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #889, reached in 1989. That year also had the most girls given the name: 207. For comparison, it was #13,811 in 2015 and unranked in 1950.
Social Security card records list Krystin in 55 years of the 146 from 1880 to 2025, starting in 1965 with 9 babies. In all, 3,131 US babies have been given the name, all of them girls. Its busiest decade was the 1980s, with 1,308 babies named Krystin.
Over the 10 years from 2016 to 2025, 28 US girls were named Krystin; the busiest of those years was 2017, with 9.
Related spellings in the SSA files include Kristen (220,952 babies since 1880), Kristin (180,951 babies since 1880), Kristine (84,514 babies since 1880) and Kristian (27,634 babies since 1880).