The baby name Gwyn appears in baby name data for the United States from 1916 to 1971. It was most popular in 1963 with 54 babies given the name.
In the later years of this period, Gwyn has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1916 | 10 |
| 1918 | 10 |
| 1920 | 12 |
| 1933 | 24 |
| 1935 | 30 |
| 1939 | 15 |
| 1943 | 15 |
| 1948 | 15 |
| 1949 | 15 |
| 1950 | 10 |
| 1951 | 6 |
| 1953 | 6 |
| 1954 | 21 |
| 1955 | 10 |
| 1957 | 10 |
| 1958 | 5 |
| 1959 | 5 |
| 1960 | 31 |
| 1961 | 49 |
| 1962 | 48 |
| 1963 | 54 |
| 1964 | 32 |
| 1968 | 5 |
| 1970 | 8 |
| 1971 | 10 |