Mancil is a very rare boys' name that was most common in the 1920s and has all but disappeared.
Mancil is a boy name. It last appears in U.S. records in 1950. Mancil first appears in 1912 and peaked in 1921 (8 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1950 | 6 | — | #3,550 |
| 1942 | 7 | — | #3,106 |
| 1941 | 6 | — | #3,366 |
| 1936 | 5 | — | #3,871 |
| 1934 | 6 | — | #3,542 |
| 1933 | 6 | — | #3,508 |
| 1930 | 8 | — | #3,185 |
| 1929 | 6 | — | #3,809 |
| 1926 | 6 | — | #4,018 |
| 1925 | 7 | — | #3,614 |
| 1924 | 6 | — | #4,167 |
| 1922 | 6 | — | #4,136 |
| 1921 | 8 | — | #3,394 |
| 1919 | 6 | — | #4,010 |
| 1918 | 6 | — | #3,997 |
| 1916 | 5 | — | #4,274 |
| 1915 | 5 | — | #4,175 |
| 1914 | 5 | — | #3,573 |
| 1912 | 5 | — | #2,770 |