ZIP Code 84330 — Plymouth, UT
84330 is a standard (street delivery) ZIP code serving Plymouth, 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 84330 at a glance
| ZIP code | 84330 |
|---|---|
| Primary city | Plymouth |
| State | Utah (UT) |
| County | Box Elder FIPS 49003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 364 |
| Coordinates | 41.906300, -112.170190 |
How ZIP+4 works in 84330
The four digits after the hyphen encode a delivery segment inside 84330. 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 84330 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 84330.
| ZIP | City | Distance |
|---|---|---|
| 84305 | Clarkston, UT | 6.3 mi |
| 84311 | Fielding, UT | 6.7 mi |
| 84334 | Riverside, UT | 8.1 mi |
| 84312 | Garland, UT | 8.8 mi |
| 84327 | Newton, UT | 9.4 mi |
| 84331 | Portage, UT | 10 mi |
| 84306 | Collinston, UT | 10.1 mi |
| 84304 | Cache Junction, UT | 10.4 mi |
| 84308 | Cornish, UT | 11.2 mi |
| 84338 | Trenton, UT | 12.1 mi |
| 83286 | Weston, ID | 12.9 mi |
| 84309 | Deweyville, UT | 13.8 mi |
Questions about 84330
What is the ZIP+4 code for 84330?
84330 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 84330, you need to look up a specific street address to get them.
What city is 84330?
84330 is assigned to Plymouth, 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.