ZIP Code 00685 — San Sebastian, PR
00685 is a standard (street delivery) ZIP code serving San Sebastian, Puerto Rico, in San Sebastián County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 00685 at a glance
| ZIP code | 00685 |
|---|---|
| Primary city | San Sebastian |
| State | Puerto Rico (PR) |
| County | San Sebastián FIPS 72131 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Puerto_Rico |
| Population | 39,988 |
| Coordinates | 18.336560, -66.975180 |
How ZIP+4 works in 00685
The four digits after the hyphen encode a delivery segment inside 00685. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 00685 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 00685.
| ZIP | City | Distance |
|---|---|---|
| 00670 | Las Marias, PR | 6.9 mi |
| 00678 | Quebradillas, PR | 7.1 mi |
| 00676 | Moca, PR | 7.5 mi |
| 00669 | Lares, PR | 8.4 mi |
| 00662 | Isabela, PR | 9.3 mi |
| 00627 | Camuy, PR | 9.4 mi |
| 00610 | Anasco, PR | 10.1 mi |
| 00611 | Angeles, PR | 11.8 mi |
| 00606 | Maricao, PR | 12 mi |
| 00603 | Aguadilla, PR | 12.7 mi |
| 00659 | Hatillo, PR | 12.7 mi |
| 00602 | Aguada, PR | 13.2 mi |
Questions about 00685
What is the ZIP+4 code for 00685?
00685 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 00685, you need to look up a specific street address to get them.
What city is 00685?
00685 is assigned to San Sebastian, Puerto Rico, in San Sebastián County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.