ZIP Code 99348 — Prescott, WA
99348 is a standard (street delivery) ZIP code serving Prescott, Washington, in Walla Walla 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 99348 at a glance
| ZIP code | 99348 |
|---|---|
| Primary city | Prescott |
| State | Washington (WA) |
| County | Walla Walla FIPS 53071 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 1,633 |
| Coordinates | 46.386810, -118.447310 |
How ZIP+4 works in 99348
The four digits after the hyphen encode a delivery segment inside 99348. 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 99348 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 99348.
| ZIP | City | Distance |
|---|---|---|
| 99359 | Starbuck, WA | 17.1 mi |
| 99361 | Waitsburg, WA | 17.8 mi |
| 99335 | Kahlotus, WA | 18.6 mi |
| 99362 | Walla Walla, WA | 21.6 mi |
| 99329 | Dixie, WA | 22.3 mi |
| 99360 | Touchet, WA | 23 mi |
| 99301 | Pasco, WA | 23.2 mi |
| 99323 | Burbank, WA | 23.6 mi |
| 99324 | College Place, WA | 23.9 mi |
| 99333 | Hooper, WA | 24.7 mi |
| 99326 | Connell, WA | 26.8 mi |
| 99328 | Dayton, WA | 28.2 mi |
Questions about 99348
What is the ZIP+4 code for 99348?
99348 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 99348, you need to look up a specific street address to get them.
What city is 99348?
99348 is assigned to Prescott, Washington, in Walla Walla 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.