ZIP Code 85377 — Carefree, AZ
85377 is a standard (street delivery) ZIP code serving Carefree, 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 85377 at a glance
| ZIP code | 85377 |
|---|---|
| Primary city | Carefree |
| State | Arizona (AZ) |
| County | Maricopa FIPS 04013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Phoenix |
| Population | 3,437 |
| Coordinates | 33.823760, -111.915150 |
How ZIP+4 works in 85377
The four digits after the hyphen encode a delivery segment inside 85377. 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 85377 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 85377.
| ZIP | City | Distance |
|---|---|---|
| 85266 | Scottsdale, AZ | 4.4 mi |
| 85331 | Cave Creek, AZ | 4.6 mi |
| 85262 | Scottsdale, AZ | 6.9 mi |
| 85085 | Phoenix, AZ | 10.2 mi |
| 85054 | Phoenix, AZ | 10.4 mi |
| 85050 | Phoenix, AZ | 10.6 mi |
| 85255 | Scottsdale, AZ | 11.2 mi |
| 85024 | Phoenix, AZ | 11.9 mi |
| 85086 | Phoenix, AZ | 12.2 mi |
| 85032 | Phoenix, AZ | 14.5 mi |
| 85254 | Scottsdale, AZ | 14.6 mi |
| 85027 | Phoenix, AZ | 14.7 mi |
Questions about 85377
What is the ZIP+4 code for 85377?
85377 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 85377, you need to look up a specific street address to get them.
What city is 85377?
85377 is assigned to Carefree, 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.