Orba is a very rare name used for both girls and boys that was most common in the 1910s and has all but disappeared.
Orba is predominantly a boy name. It last appears in U.S. records in 1933. Orba first appears in 1893 and peaked in 1912 (8 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 1933 | 5 | — | — | #4,022 |
| 1931 | 5 | — | — | #4,180 |
| 1929 | 5 | — | — | #4,391 |
| 1924 | 6 | — | #4,904 | — |
| 1923 | 5 | — | — | #4,723 |
| 1922 | 5 | — | #5,597 | — |
| 1921 | 6 | — | #4,950 | — |
| 1919 | 8 | — | — | #3,309 |
| 1918 | 5 | — | #5,398 | — |
| 1917 | 8 | — | — | #3,135 |
| 1916 | 5 | — | #4,978 | — |
| 1914 | 7 | — | #3,102 | — |
| 1912 | 8 | — | — | #2,006 |
| 1893 | 7 | — | #1,263 | — |