ZIP Code 00656 — Guayanilla, PR
00656 is a standard (street delivery) ZIP code serving Guayanilla, Puerto Rico, in Guayanilla 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 00656 at a glance
| ZIP code | 00656 |
|---|---|
| Primary city | Guayanilla |
| State | Puerto Rico (PR) |
| County | Guayanilla FIPS 72059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Puerto_Rico |
| Population | 17,398 |
| Coordinates | 18.041860, -66.791230 |
How ZIP+4 works in 00656
The four digits after the hyphen encode a delivery segment inside 00656. 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 00656 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 00656.
| ZIP | City | Distance |
|---|---|---|
| 00698 | Yauco, PR | 4.7 mi |
| 00624 | Penuelas, PR | 4.9 mi |
| 00653 | Guanica, PR | 8 mi |
| 00728 | Ponce, PR | 8.9 mi |
| 00601 | Adjuntas, PR | 9.9 mi |
| 00631 | Castaner, PR | 10.2 mi |
| 00637 | Sabana Grande, PR | 10.5 mi |
| 00731 | Ponce, PR | 11.1 mi |
| 00647 | Ensenada, PR | 11.2 mi |
| 00730 | Ponce, PR | 11.7 mi |
| 00717 | Ponce, PR | 12.1 mi |
| 00606 | Maricao, PR | 12.8 mi |
Questions about 00656
What is the ZIP+4 code for 00656?
00656 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 00656, you need to look up a specific street address to get them.
What city is 00656?
00656 is assigned to Guayanilla, Puerto Rico, in Guayanilla 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.