In 2025, 63 US girls were named Joslyn, making it the 2,732nd most common girls’ name of the year, down 476 places from #2,256 in 2024. That is 20 fewer than the 83 girls named Joslyn in 2024. Its best rank for girls was #637, reached in 2011. The most girls given the name in a single year was 461, in 2010. For comparison, it was #870 in 2015 and #1,885 in 1950.
Social Security card records list Joslyn in 82 years of the 146 from 1880 to 2025, starting in 1930 with 5 babies. In all, 11,255 US babies have been given the name, 99.7% of them girls and 0.2% boys. Its busiest decade was the 2010s, with 3,380 babies named Joslyn.
Over the 10 years from 2016 to 2025, 1,737 US girls were named Joslyn; the busiest of those years was 2017, with 285. In 2025 that was about 1 in 25,512 of the girls in SSA’s list for the year.
Among the states, Joslyn ranked highest in Tennessee in 2025, at #1,217 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Josslyn (2,171 babies since 1880), Joslin (1,416 babies since 1880), Joslynn (3,320 babies since 1880) and Jozlyn (1,174 babies since 1880). Rarer spellings such as Jozlynn, Josslynn and Joslynne are summarised on this page.