The baby name Lyn appears in baby name data for the United States from 1926 to 1983. It was most popular in 1956 with 255 babies given the name.
In the later years of this period, Lyn has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1926 | 12 |
| 1928 | 10 |
| 1929 | 12 |
| 1932 | 6 |
| 1936 | 5 |
| 1937 | 7 |
| 1937 | 6 |
| 1938 | 5 |
| 1939 | 6 |
| 1941 | 15 |
| 1942 | 26 |
| 1943 | 41 |
| 1944 | 67 |
| 1945 | 72 |
| 1946 | 154 |
| 1947 | 164 |
| 1947 | 5 |
| 1948 | 165 |
| 1948 | 6 |
| 1949 | 144 |
| 1949 | 5 |
| 1950 | 146 |
| 1950 | 5 |
| 1951 | 179 |
| 1952 | 229 |
| 1952 | 5 |
| 1953 | 250 |
| 1954 | 253 |
| 1954 | 15 |
| 1955 | 212 |
| 1955 | 5 |
| 1956 | 255 |
| 1957 | 248 |
| 1957 | 5 |
| 1958 | 176 |
| 1959 | 157 |
| 1960 | 177 |
| 1961 | 187 |
| 1962 | 224 |
| 1963 | 146 |
| 1964 | 130 |
| 1965 | 113 |
| 1966 | 47 |
| 1967 | 89 |
| 1968 | 56 |
| 1969 | 67 |
| 1969 | 5 |
| 1970 | 54 |
| 1971 | 54 |
| 1972 | 28 |
| 1973 | 25 |
| 1974 | 13 |
| 1975 | 28 |
| 1976 | 18 |
| 1977 | 5 |
| 1983 | 6 |