The baby name Glennis appears in baby name data for the United States from 1917 to 1959. It was most popular in 1939 with 36 babies given the name.
Over the period shown, Glennis has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1917 | 6 |
| 1920 | 10 |
| 1922 | 10 |
| 1923 | 5 |
| 1924 | 5 |
| 1926 | 10 |
| 1928 | 28 |
| 1929 | 10 |
| 1930 | 10 |
| 1932 | 14 |
| 1933 | 10 |
| 1933 | 12 |
| 1934 | 10 |
| 1935 | 5 |
| 1935 | 12 |
| 1936 | 20 |
| 1936 | 12 |
| 1937 | 5 |
| 1938 | 28 |
| 1939 | 36 |
| 1939 | 10 |
| 1940 | 12 |
| 1941 | 5 |
| 1942 | 10 |
| 1943 | 6 |
| 1943 | 5 |
| 1944 | 10 |
| 1945 | 5 |
| 1947 | 5 |
| 1948 | 7 |
| 1948 | 12 |
| 1949 | 10 |
| 1949 | 10 |
| 1950 | 10 |
| 1950 | 10 |
| 1951 | 10 |
| 1954 | 10 |
| 1954 | 10 |
| 1955 | 16 |
| 1956 | 10 |
| 1959 | 12 |