In 2025, 5 US girls were named Joslin, making it the 15,988th most common girls’ name of the year, down 1,715 places from #14,273 in 2024. That is 1 fewer than the 6 girls named Joslin in 2024. Its best rank for girls was #2,677, reached in 2010. That year also had the most girls given the name: 67. For comparison, it was #4,538 in 2015 and unranked in 1950.
Social Security card records list Joslin in 58 years of the 146 from 1880 to 2025, starting in 1951 with 8 babies. In all, 1,416 US babies have been given the name, 99% of them girls and 0.7% boys. Its busiest decade was the 2000s, with 450 babies named Joslin.
Over the 10 years from 2016 to 2025, 152 US girls were named Joslin; the busiest of those years was 2016, with 28. In 2025 that was about 1 in 321,453 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Joslyn (11,255 babies since 1880), Joselin (4,204 babies since 1880), Joslynn (3,320 babies since 1880) and Josslyn (2,171 babies since 1880).