In 2025, 19 US girls were named Erynn, making it the 6,185th most common girls’ name of the year, down 1,249 places from #4,936 in 2024. That is 8 fewer than the 27 girls named Erynn in 2024. Its best rank for girls was #2,101, reached in 1999. That year also had the most girls given the name: 73. For comparison, it was #3,724 in 2015 and unranked in 1950.
Social Security card records list Erynn in 56 years of the 146 from 1880 to 2025, starting in 1970 with 8 babies. In all, 1,853 US babies have been given the name, all of them girls. Its busiest decade was the 2000s, with 538 babies named Erynn.
Over the 10 years from 2016 to 2025, 302 US girls were named Erynn; the busiest of those years was 2019, with 43. In 2025 that was about 1 in 84,593 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Erin (326,053 babies since 1880), Eryn (7,588 babies since 1880), Erinn (3,561 babies since 1880) and Eren (2,440 babies since 1880).