Fewer than five US girls were named Glennis in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #908, reached in 1939. The most girls given the name in a single year was 62, in 1947. For comparison, it was unranked (under five girls) in 2015 and #1,438 in 1950.
Fewer than five US boys were named Glennis in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #1,472, reached in 1948. The most boys given the name in a single year was 26, in 1956. For comparison, it was unranked (under five boys) in 2015 and #1,772 in 1950.
Social Security card records list Glennis in 80 years of the 146 from 1880 to 2025, starting in 1912 with 12 babies. In all, 2,777 US babies have been given the name, 74% of them girls and 26% boys. Its busiest decade was the 1940s, with 589 babies named Glennis.
In none of the 10 years from 2016 to 2025 were five or more US girls named Glennis.
Related spellings in the SSA files include Glynis (2,024 babies since 1880). Rarer spellings such as Glenys, Glynnis and Glenis are summarised on this page.