ZIP Code 97231 — Portland, OR
97231 is a standard (street delivery) ZIP code serving Portland, Oregon, in Multnomah 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 97231 at a glance
| ZIP code | 97231 |
|---|---|
| Primary city | Portland |
| State | Oregon (OR) |
| County | Multnomah FIPS 41051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 4,308 |
| Coordinates | 45.681970, -122.826870 |
How ZIP+4 works in 97231
The four digits after the hyphen encode a delivery segment inside 97231. 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 97231 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 Portland
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 97231.
| ZIP | City | Distance |
|---|---|---|
| 98660 | Vancouver, WA | 4.6 mi |
| 97203 | Portland, OR | 6.3 mi |
| 98685 | Vancouver, WA | 7 mi |
| 98663 | Vancouver, WA | 8.2 mi |
| 98665 | Vancouver, WA | 8.3 mi |
| 97217 | Portland, OR | 8.6 mi |
| 97229 | Portland, OR | 9.1 mi |
| 97124 | Hillsboro, OR | 9.6 mi |
| 97133 | North Plains, OR | 9.7 mi |
| 98661 | Vancouver, WA | 10.1 mi |
| 97210 | Portland, OR | 10.1 mi |
| 97056 | Scappoose, OR | 10.1 mi |
Questions about 97231
What is the ZIP+4 code for 97231?
97231 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 97231, you need to look up a specific street address to get them.
What city is 97231?
97231 is assigned to Portland, Oregon, in Multnomah 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.