Treacy is a very rare variant of Tracy that was most common in the 1960s and has all but disappeared.
Treacy is a girl name. It last appears in U.S. records in 1977. Treacy first appears in 1954 and peaked in 1962 (11 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1977 | 5 | — | #11,221 |
| 1971 | 11 | — | #5,112 |
| 1970 | 7 | — | #7,027 |
| 1969 | 6 | — | #7,424 |
| 1967 | 6 | — | #6,753 |
| 1966 | 5 | — | #7,542 |
| 1965 | 7 | — | #5,774 |
| 1962 | 11 | — | #4,245 |
| 1961 | 7 | — | #5,804 |
| 1960 | 8 | — | #5,143 |
| 1954 | 5 | — | #6,559 |