00978 ZIP Code — Saint Just, PR
Trujillo Alto County, Puerto Rico
ZIP code 00978 is located in Saint Just, Puerto Rico, within Trujillo Alto County. It covers approximately 0.00 square miles and serves a population of 0 residents. This is a standard ZIP code in the Atlantic (AT) — no DST timezone, served by area code 787/939.
0
population
0.00
sq mi land
Standard
ZIP type
Atlantic (AT) — no DST
timezone
00978 ZIP code map
Cities in ZIP code 00978
Below are the cities the US Postal Service accepts for ZIP code 00978. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Saint Just | Acceptable |
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 0 |
| Population density | 0 / sq mi |
| State FIPS | 72 |
| County FIPS | 139 |
| Geography | |
|---|---|
| Land area | 0.00 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 18.3703 |
| Longitude | -66.0123 |
| Timezone | Atlantic (AT) — no DST |
| Area code | 787/939 |