ZIP Code 84631 — Fillmore, UT
84631 is a standard (street delivery) ZIP code serving Fillmore, Utah, in Millard 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 84631 at a glance
| ZIP code | 84631 |
|---|---|
| Primary city | Fillmore |
| State | Utah (UT) |
| County | Millard FIPS 49027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 3,196 |
| Coordinates | 38.997710, -112.396750 |
How ZIP+4 works in 84631
The four digits after the hyphen encode a delivery segment inside 84631. 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 84631 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 84631.
| ZIP | City | Distance |
|---|---|---|
| 84644 | Meadow, UT | 8.9 mi |
| 84636 | Holden, UT | 10.3 mi |
| 84637 | Kanosh, UT | 19.6 mi |
| 84656 | Scipio, UT | 22.5 mi |
| 84649 | Oak City, UT | 24.3 mi |
| 84724 | Elsinore, UT | 25.9 mi |
| 84620 | Aurora, UT | 25.9 mi |
| 84739 | Joseph, UT | 26.3 mi |
| 84711 | Annabella, UT | 26.7 mi |
| 84657 | Sigurd, UT | 27.4 mi |
| 84730 | Glenwood, UT | 27.5 mi |
| 84652 | Redmond, UT | 27.8 mi |
Questions about 84631
What is the ZIP+4 code for 84631?
84631 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 84631, you need to look up a specific street address to get them.
What city is 84631?
84631 is assigned to Fillmore, Utah, in Millard 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.