ZIP Code 99333 — Hooper, WA
99333 is a standard (street delivery) ZIP code serving Hooper, Washington, in Whitman 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 99333 at a glance
| ZIP code | 99333 |
|---|---|
| Primary city | Hooper |
| State | Washington (WA) |
| County | Whitman FIPS 53075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 151 |
| Coordinates | 46.681120, -118.152620 |
How ZIP+4 works in 99333
The four digits after the hyphen encode a delivery segment inside 99333. 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 99333 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 99333.
| ZIP | City | Distance |
|---|---|---|
| 99136 | Hay, WA | 9.7 mi |
| 99359 | Starbuck, WA | 10.2 mi |
| 99371 | Washtucna, WA | 10.5 mi |
| 99143 | Lacrosse, WA | 14.6 mi |
| 99335 | Kahlotus, WA | 15.5 mi |
| 99105 | Benge, WA | 16.9 mi |
| 99348 | Prescott, WA | 24.6 mi |
| 99125 | Endicott, WA | 25.5 mi |
| 99341 | Lind, WA | 27.9 mi |
| 99361 | Waitsburg, WA | 30.7 mi |
| 99328 | Dayton, WA | 31.2 mi |
| 99169 | Ritzville, WA | 32 mi |
Questions about 99333
What is the ZIP+4 code for 99333?
99333 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 99333, you need to look up a specific street address to get them.
What city is 99333?
99333 is assigned to Hooper, Washington, in Whitman 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.