ZIP Code 00603 — Aguadilla, PR
00603 is a standard (street delivery) ZIP code serving Aguadilla, Puerto Rico, in Aguadilla 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 00603 at a glance
| ZIP code | 00603 |
|---|---|
| Primary city | Aguadilla |
| State | Puerto Rico (PR) |
| County | Aguadilla FIPS 72005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Puerto_Rico |
| Population | 48,448 |
| Coordinates | 18.457440, -67.122250 |
How ZIP+4 works in 00603
The four digits after the hyphen encode a delivery segment inside 00603. 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 00603 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 00603.
| ZIP | City | Distance |
|---|---|---|
| 00690 | San Antonio, PR | 3 mi |
| 00676 | Moca, PR | 6.1 mi |
| 00662 | Isabela, PR | 7 mi |
| 00602 | Aguada, PR | 7.5 mi |
| 00677 | Rincon, PR | 11.1 mi |
| 00610 | Anasco, PR | 11.5 mi |
| 00678 | Quebradillas, PR | 12.7 mi |
| 00685 | San Sebastian, PR | 12.7 mi |
| 00682 | Mayaguez, PR | 16.2 mi |
| 00627 | Camuy, PR | 17.3 mi |
| 00670 | Las Marias, PR | 17.5 mi |
| 00669 | Lares, PR | 21.1 mi |
Questions about 00603
What is the ZIP+4 code for 00603?
00603 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 00603, you need to look up a specific street address to get them.
What city is 00603?
00603 is assigned to Aguadilla, Puerto Rico, in Aguadilla 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.