ZIP Code 85550 — San Carlos, AZ
85550 is a standard (street delivery) ZIP code serving San Carlos, Arizona, in Gila 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 85550 at a glance
| ZIP code | 85550 |
|---|---|
| Primary city | San Carlos |
| State | Arizona (AZ) |
| County | Gila FIPS 04007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Phoenix |
| Population | 5,696 |
| Coordinates | 33.548330, -110.512440 |
How ZIP+4 works in 85550
The four digits after the hyphen encode a delivery segment inside 85550. 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 85550 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 85550.
| ZIP | City | Distance |
|---|---|---|
| 85501 | Globe, AZ | 13.5 mi |
| 85532 | Claypool, AZ | 21.5 mi |
| 85542 | Peridot, AZ | 21.8 mi |
| 85539 | Miami, AZ | 28.2 mi |
| 85926 | Fort Apache, AZ | 34.4 mi |
| 85941 | Whiteriver, AZ | 34.8 mi |
| 85530 | Bylas, AZ | 35.3 mi |
| 85137 | Kearny, AZ | 40.5 mi |
| 85536 | Fort Thomas, AZ | 40.6 mi |
| 85554 | Young, AZ | 40.9 mi |
Questions about 85550
What is the ZIP+4 code for 85550?
85550 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 85550, you need to look up a specific street address to get them.
What city is 85550?
85550 is assigned to San Carlos, Arizona, in Gila 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.