ZIP Code 99173 — Springdale, WA
99173 is a standard (street delivery) ZIP code serving Springdale, Washington, in Stevens 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 99173 at a glance
| ZIP code | 99173 |
|---|---|
| Primary city | Springdale |
| State | Washington (WA) |
| County | Stevens FIPS 53065 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 1,623 |
| Coordinates | 48.037020, -117.857080 |
How ZIP+4 works in 99173
The four digits after the hyphen encode a delivery segment inside 99173. 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 99173 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 99173.
| ZIP | City | Distance |
|---|---|---|
| 99181 | Valley, WA | 8.6 mi |
| 99013 | Ford, WA | 10.5 mi |
| 99040 | Wellpinit, WA | 11.3 mi |
| 99034 | Tumtum, WA | 11.3 mi |
| 99110 | Clayton, WA | 12.9 mi |
| 99148 | Loon Lake, WA | 13.9 mi |
| 99137 | Hunters, WA | 14.3 mi |
| 99129 | Fruitland, WA | 15.2 mi |
| 99006 | Deer Park, WA | 17 mi |
| 99026 | Nine Mile Falls, WA | 19.3 mi |
| 99109 | Chewelah, WA | 19.4 mi |
| 99101 | Addy, WA | 19.9 mi |
Questions about 99173
What is the ZIP+4 code for 99173?
99173 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 99173, you need to look up a specific street address to get them.
What city is 99173?
99173 is assigned to Springdale, Washington, in Stevens 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.