ZIP Code 99155 — Nespelem, WA
99155 is a standard (street delivery) ZIP code serving Nespelem, Washington, in Okanogan 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 99155 at a glance
| ZIP code | 99155 |
|---|---|
| Primary city | Nespelem |
| State | Washington (WA) |
| County | Okanogan FIPS 53047 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 1,009 |
| Coordinates | 48.277370, -118.961800 |
How ZIP+4 works in 99155
The four digits after the hyphen encode a delivery segment inside 99155. 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 99155 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 99155.
| ZIP | City | Distance |
|---|---|---|
| 99140 | Keller, WA | 16 mi |
| 98841 | Omak, WA | 16.9 mi |
| 99116 | Coulee Dam, WA | 18.2 mi |
| 99124 | Elmer City, WA | 18.9 mi |
| 99133 | Grand Coulee, WA | 19.8 mi |
| 98840 | Okanogan, WA | 25.6 mi |
| 99123 | Electric City, WA | 26.5 mi |
| 99138 | Inchelium, WA | 26.5 mi |
| 99166 | Republic, WA | 26.6 mi |
| 98849 | Riverside, WA | 27.7 mi |
| 98855 | Tonasket, WA | 30.7 mi |
| 98830 | Mansfield, WA | 37.3 mi |
Questions about 99155
What is the ZIP+4 code for 99155?
99155 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 99155, you need to look up a specific street address to get them.
What city is 99155?
99155 is assigned to Nespelem, Washington, in Okanogan 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.