In 2025, 56 US girls were named Gwenyth, making it the 2,970th most common girls’ name of the year, up 165 places from #3,135 in 2024. That is 5 more than the 51 girls named Gwenyth in 2024. Its best rank for girls was #1,332, reached in 2013. That year also had the most girls given the name: 176. For comparison, it was #1,534 in 2015 and #4,948 in 1950.
Social Security card records list Gwenyth in 64 years of the 146 from 1880 to 2025, starting in 1921 with 5 babies. In all, 3,268 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 1,348 babies named Gwenyth.
Over the 10 years from 2016 to 2025, 856 US girls were named Gwenyth; the busiest of those years was 2016, with 143. In 2025 that was about 1 in 28,701 of the girls in SSA’s list for the year.
Among the states, Gwenyth ranked highest in New Jersey in 2025, at #1,241 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Gwyneth (6,657 babies since 1880). Rarer spellings such as Gwennyth are summarised on this page.