Ong is a very rare girls' name that was most common in the 1980s and has all but disappeared.
Ong is a girl name. It last appears in U.S. records in 1999. Ong first appears in 1989 and peaked in 1989 (14 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1999 | 5 | 5 | #16,192 |
| 1994 | 5 | — | #15,092 |
| 1993 | 6 | — | #12,970 |
| 1992 | 11 | — | #7,884 |
| 1991 | 6 | — | #12,638 |
| 1990 | 5 | — | #14,563 |
| 1989 | 14 | — | #6,062 |