ZIP Code 85620 — Naco, AZ
85620 is a standard (street delivery) ZIP code serving Naco, Arizona, in Cochise 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 85620 at a glance
| ZIP code | 85620 |
|---|---|
| Primary city | Naco |
| State | Arizona (AZ) |
| County | Cochise FIPS 04003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Phoenix |
| Population | 988 |
| Coordinates | 31.338350, -109.943100 |
How ZIP+4 works in 85620
The four digits after the hyphen encode a delivery segment inside 85620. 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 85620 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 85620.
| ZIP | City | Distance |
|---|---|---|
| 85603 | Bisbee, AZ | 6.9 mi |
| 85615 | Hereford, AZ | 16.3 mi |
| 85650 | Sierra Vista, AZ | 18.7 mi |
| 85635 | Sierra Vista, AZ | 20.1 mi |
| 85617 | Mcneal, AZ | 20.2 mi |
| 85626 | Pirtleville, AZ | 22.1 mi |
| 85608 | Douglas, AZ | 22.5 mi |
| 85638 | Tombstone, AZ | 24.9 mi |
| 85613 | Fort Huachuca, AZ | 29.9 mi |
| 85610 | Elfrida, AZ | 31.9 mi |
| 85616 | Huachuca City, AZ | 33.9 mi |
| 85611 | Elgin, AZ | 39.6 mi |
Questions about 85620
What is the ZIP+4 code for 85620?
85620 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 85620, you need to look up a specific street address to get them.
What city is 85620?
85620 is assigned to Naco, Arizona, in Cochise 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.