ZIP Code 00978 is located in Saint Just Puerto Rico. 00978 is entirely within Trujillo Alta Municipio.
| ZIP Code Name | Saint Just |
| Primary County | Trujillo Alta Municipio |
| ZIP Code Type | PO Box |
| Current Time | AST |
| Coordinates | 18.37853241,-65.99963379 |
| Adjacent ZIP Codes | |
| Metropolitan/Micropolitan Stat Area | San Juan-Bayamón-Caguas, PR |
| Time Zone | Atlantic Standard Time |
| IANA Timezone | America/Puerto_Rico |
| School Districts in 00978 |