ZIP Code 84040 — Layton, UT
84040 is a standard (street delivery) ZIP code serving Layton, Utah, in Davis 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 84040 at a glance
| ZIP code | 84040 |
|---|---|
| Primary city | Layton |
| State | Utah (UT) |
| County | Davis FIPS 49011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 28,509 |
| Coordinates | 41.091210, -111.896740 |
How ZIP+4 works in 84040
The four digits after the hyphen encode a delivery segment inside 84040. 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 84040 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.
Other ZIP codes in Layton
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 84040.
| ZIP | City | Distance |
|---|---|---|
| 84041 | Layton, UT | 4.7 mi |
| 84056 | Hill Air Force Base, UT | 5.5 mi |
| 84405 | Ogden, UT | 5.8 mi |
| 84037 | Kaysville, UT | 6.9 mi |
| 84403 | Ogden, UT | 7.1 mi |
| 84408 | Ogden, UT | 7.3 mi |
| 84025 | Farmington, UT | 7.9 mi |
| 84015 | Clearfield, UT | 8.8 mi |
| 84075 | Syracuse, UT | 9.2 mi |
| 84067 | Roy, UT | 9.6 mi |
| 84014 | Centerville, UT | 11.1 mi |
| 84401 | Ogden, UT | 11.4 mi |
Questions about 84040
What is the ZIP+4 code for 84040?
84040 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 84040, you need to look up a specific street address to get them.
What city is 84040?
84040 is assigned to Layton, Utah, in Davis 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.