ZIP Code 84643 — Mayfield, UT
84643 is a standard (street delivery) ZIP code serving Mayfield, Utah, in Sanpete 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 84643 at a glance
| ZIP code | 84643 |
|---|---|
| Primary city | Mayfield |
| State | Utah (UT) |
| County | Sanpete FIPS 49039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 650 |
| Coordinates | 39.128730, -111.684850 |
How ZIP+4 works in 84643
The four digits after the hyphen encode a delivery segment inside 84643. 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 84643 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 84643.
| ZIP | City | Distance |
|---|---|---|
| 84665 | Sterling, UT | 4.8 mi |
| 84642 | Manti, UT | 6.5 mi |
| 84622 | Centerfield, UT | 7.2 mi |
| 84634 | Gunnison, UT | 8.8 mi |
| 84621 | Axtell, UT | 9.4 mi |
| 84652 | Redmond, UT | 12.9 mi |
| 84630 | Fayette, UT | 14.9 mi |
| 84654 | Salina, UT | 16.5 mi |
| 84627 | Ephraim, UT | 16.5 mi |
| 84620 | Aurora, UT | 19.2 mi |
| 84623 | Chester, UT | 23.1 mi |
| 84656 | Scipio, UT | 23.9 mi |
Questions about 84643
What is the ZIP+4 code for 84643?
84643 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 84643, you need to look up a specific street address to get them.
What city is 84643?
84643 is assigned to Mayfield, Utah, in Sanpete 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.