ZIP Code 83340 — Ketchum, ID
83340 is a standard (street delivery) ZIP code serving Ketchum, Idaho, in Blaine 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 83340 at a glance
| ZIP code | 83340 |
|---|---|
| Primary city | Ketchum |
| State | Idaho (ID) |
| County | Blaine FIPS 16013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Boise |
| Population | 5,325 |
| Coordinates | 43.771780, -114.581380 |
How ZIP+4 works in 83340
The four digits after the hyphen encode a delivery segment inside 83340. 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 83340 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 83340.
| ZIP | City | Distance |
|---|---|---|
| 83353 | Sun Valley, ID | 13.7 mi |
| 83354 | Sun Valley, ID | 14.7 mi |
| 83327 | Fairfield, ID | 20.9 mi |
| 83333 | Hailey, ID | 22.5 mi |
| 83227 | Clayton, ID | 27.5 mi |
| 83313 | Bellevue, ID | 34.1 mi |
| 83322 | Corral, ID | 37 mi |
| 83348 | Picabo, ID | 41.1 mi |
Questions about 83340
What is the ZIP+4 code for 83340?
83340 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 83340, you need to look up a specific street address to get them.
What city is 83340?
83340 is assigned to Ketchum, Idaho, in Blaine 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.