ZIP Code 83623 — Glenns Ferry, ID
83623 is a standard (street delivery) ZIP code serving Glenns Ferry, Idaho, in Elmore 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 83623 at a glance
| ZIP code | 83623 |
|---|---|
| Primary city | Glenns Ferry |
| State | Idaho (ID) |
| County | Elmore FIPS 16039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Boise |
| Population | 1,521 |
| Coordinates | 43.049320, -115.394850 |
How ZIP+4 works in 83623
The four digits after the hyphen encode a delivery segment inside 83623. 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 83623 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 83623.
| ZIP | City | Distance |
|---|---|---|
| 83633 | King Hill, ID | 9.3 mi |
| 83627 | Hammett, ID | 11.7 mi |
| 83337 | Hill City, ID | 16.7 mi |
| 83314 | Bliss, ID | 22.9 mi |
| 83648 | Mountain Home Afb, ID | 23.7 mi |
| 83647 | Mountain Home, ID | 24.6 mi |
| 83322 | Corral, ID | 28.3 mi |
| 83332 | Hagerman, ID | 29.2 mi |
| 83316 | Buhl, ID | 39.9 mi |
| 83327 | Fairfield, ID | 43.9 mi |
Questions about 83623
What is the ZIP+4 code for 83623?
83623 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 83623, you need to look up a specific street address to get them.
What city is 83623?
83623 is assigned to Glenns Ferry, Idaho, in Elmore 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.