ZIP Code 85139 — Maricopa, AZ
85139 is a standard (street delivery) ZIP code serving Maricopa, Arizona, in Pinal 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 85139 at a glance
| ZIP code | 85139 |
|---|---|
| Primary city | Maricopa |
| State | Arizona (AZ) |
| County | Pinal FIPS 04021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Phoenix |
| Population | 20,784 |
| Coordinates | 32.920960, -112.211170 |
How ZIP+4 works in 85139
The four digits after the hyphen encode a delivery segment inside 85139. 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 85139 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 Maricopa
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 85139.
| ZIP | City | Distance |
|---|---|---|
| 85138 | Maricopa, AZ | 14.5 mi |
| 85172 | Stanfield, AZ | 15.1 mi |
| 85339 | Laveen, AZ | 22.4 mi |
| 85121 | Bapchule, AZ | 22.8 mi |
| 85193 | Casa Grande, AZ | 23.7 mi |
| 85045 | Phoenix, AZ | 26.8 mi |
| 85122 | Casa Grande, AZ | 26.8 mi |
| 85226 | Chandler, AZ | 28.3 mi |
| 85048 | Phoenix, AZ | 28.4 mi |
| 85248 | Chandler, AZ | 28.4 mi |
| 85147 | Sacaton, AZ | 30.8 mi |
| 85326 | Buckeye, AZ | 30.8 mi |
Questions about 85139
What is the ZIP+4 code for 85139?
85139 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 85139, you need to look up a specific street address to get them.
What city is 85139?
85139 is assigned to Maricopa, Arizona, in Pinal 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.