ZIP Code 84309 — Deweyville, UT
84309 is a standard (street delivery) ZIP code serving Deweyville, Utah, in Box Elder 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 84309 at a glance
| ZIP code | 84309 |
|---|---|
| Primary city | Deweyville |
| State | Utah (UT) |
| County | Box Elder FIPS 49003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 871 |
| Coordinates | 41.713750, -112.099080 |
How ZIP+4 works in 84309
The four digits after the hyphen encode a delivery segment inside 84309. 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 84309 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 84309.
| ZIP | City | Distance |
|---|---|---|
| 84314 | Honeyville, UT | 4.5 mi |
| 84306 | Collinston, UT | 5.1 mi |
| 84312 | Garland, UT | 5.4 mi |
| 84325 | Mendon, UT | 5.7 mi |
| 84334 | Riverside, UT | 5.9 mi |
| 84301 | Bear River City, UT | 7.1 mi |
| 84311 | Fielding, UT | 7.4 mi |
| 84304 | Cache Junction, UT | 9.4 mi |
| 84302 | Brigham City, UT | 9.6 mi |
| 84337 | Tremonton, UT | 9.7 mi |
| 84339 | Wellsville, UT | 10.3 mi |
| 84327 | Newton, UT | 11.8 mi |
Questions about 84309
What is the ZIP+4 code for 84309?
84309 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 84309, you need to look up a specific street address to get them.
What city is 84309?
84309 is assigned to Deweyville, Utah, in Box Elder 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.