ZIP Code 84640 — Lynndyl, UT
84640 is a standard (street delivery) ZIP code serving Lynndyl, 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 84640 at a glance
| ZIP code | 84640 |
|---|---|
| Primary city | Lynndyl |
| State | Utah (UT) |
| County | Millard FIPS 49027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 124 |
| Coordinates | 39.476220, -112.399420 |
How ZIP+4 works in 84640
The four digits after the hyphen encode a delivery segment inside 84640. 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 84640 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 84640.
| ZIP | City | Distance |
|---|---|---|
| 84638 | Leamington, UT | 7.8 mi |
| 84649 | Oak City, UT | 9.7 mi |
| 84624 | Delta, UT | 11.9 mi |
| 84635 | Hinckley, UT | 18.1 mi |
| 84656 | Scipio, UT | 22.7 mi |
| 84636 | Holden, UT | 23.4 mi |
| 84639 | Levan, UT | 26.6 mi |
| 84648 | Nephi, UT | 31.8 mi |
| 84630 | Fayette, UT | 32.2 mi |
| 84631 | Fillmore, UT | 33 mi |
| 84628 | Eureka, UT | 34.7 mi |
| 84634 | Gunnison, UT | 36.3 mi |
Questions about 84640
What is the ZIP+4 code for 84640?
84640 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 84640, you need to look up a specific street address to get them.
What city is 84640?
84640 is assigned to Lynndyl, 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.