ZIP Code 85323 — Avondale, AZ
85323 is a standard (street delivery) ZIP code serving Avondale, Arizona, in Maricopa 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 85323 at a glance
| ZIP code | 85323 |
|---|---|
| Primary city | Avondale |
| State | Arizona (AZ) |
| County | Maricopa FIPS 04013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Phoenix |
| Population | 47,043 |
| Coordinates | 33.418880, -112.326150 |
How ZIP+4 works in 85323
The four digits after the hyphen encode a delivery segment inside 85323. 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 85323 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.
Other ZIP codes in Avondale
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 85323.
| ZIP | City | Distance |
|---|---|---|
| 85329 | Cashion, AZ | 1.9 mi |
| 85353 | Tolleson, AZ | 3.1 mi |
| 85392 | Avondale, AZ | 4.1 mi |
| 85338 | Goodyear, AZ | 5.7 mi |
| 85037 | Phoenix, AZ | 6.1 mi |
| 85395 | Goodyear, AZ | 6.3 mi |
| 85043 | Phoenix, AZ | 7.5 mi |
| 85307 | Glendale, AZ | 8 mi |
| 85033 | Phoenix, AZ | 8.4 mi |
| 85035 | Phoenix, AZ | 8.4 mi |
| 85309 | Luke Air Force Base, AZ | 8.6 mi |
| 85305 | Glendale, AZ | 8.7 mi |
Questions about 85323
What is the ZIP+4 code for 85323?
85323 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 85323, you need to look up a specific street address to get them.
What city is 85323?
85323 is assigned to Avondale, Arizona, in Maricopa 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.