ZIP Code 84055 — Oakley, UT
84055 is a standard (street delivery) ZIP code serving Oakley, Utah, in Summit 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 84055 at a glance
| ZIP code | 84055 |
|---|---|
| Primary city | Oakley |
| State | Utah (UT) |
| County | Summit FIPS 49043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 1,584 |
| Coordinates | 40.718890, -111.161060 |
How ZIP+4 works in 84055
The four digits after the hyphen encode a delivery segment inside 84055. 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 84055 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 84055.
| ZIP | City | Distance |
|---|---|---|
| 84036 | Kamas, UT | 4.9 mi |
| 84061 | Peoa, UT | 9.6 mi |
| 84017 | Coalville, UT | 16.5 mi |
| 84060 | Park City, UT | 18.7 mi |
| 84098 | Park City, UT | 19.6 mi |
| 84049 | Midway, UT | 23.4 mi |
| 84024 | Echo, UT | 24.9 mi |
| 84032 | Heber City, UT | 24.9 mi |
| 84033 | Henefer, UT | 25 mi |
| 84082 | Wallsburg, UT | 28.1 mi |
| 84031 | Hanna, UT | 28.5 mi |
| 84109 | Salt Lake City, UT | 28.5 mi |
Questions about 84055
What is the ZIP+4 code for 84055?
84055 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 84055, you need to look up a specific street address to get them.
What city is 84055?
84055 is assigned to Oakley, Utah, in Summit 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.