Mirl is a very rare name used for both girls and boys that was most common in the 1920s and has all but disappeared.
Mirl is predominantly a boy name. It last appears in U.S. records in 1942. Mirl first appears in 1913 and peaked in 1913 (8 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 1942 | 5 | — | — | #3,908 |
| 1937 | 5 | — | #4,721 | — |
| 1935 | 7 | — | — | #3,159 |
| 1934 | 5 | — | #4,772 | — |
| 1933 | 5 | — | — | #3,994 |
| 1932 | 5 | — | — | #4,123 |
| 1931 | 5 | — | #4,778 | — |
| 1930 | 5 | — | #5,040 | — |
| 1928 | 7 | — | — | #3,598 |
| 1925 | 7 | — | — | #3,630 |
| 1923 | 5 | — | — | #4,674 |
| 1922 | 13 | — | #4,847 | #3,760 |
| 1921 | 14 | — | #4,908 | #3,403 |
| 1920 | 5 | — | — | #4,751 |
| 1919 | 6 | — | #4,633 | — |
| 1918 | 6 | — | — | #4,017 |
| 1917 | 5 | — | #5,076 | — |
| 1916 | 7 | — | #3,808 | — |
| 1915 | 7 | — | — | #3,281 |
| 1914 | 5 | — | — | #3,590 |
| 1913 | 13 | — | #3,537 | #2,204 |