ZIP Code 83217 — Bancroft, ID
83217 is a standard (street delivery) ZIP code serving Bancroft, Idaho, in Caribou 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 83217 at a glance
| ZIP code | 83217 |
|---|---|
| Primary city | Bancroft |
| State | Idaho (ID) |
| County | Caribou FIPS 16029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Boise |
| Population | 712 |
| Coordinates | 42.775250, -111.935590 |
How ZIP+4 works in 83217
The four digits after the hyphen encode a delivery segment inside 83217. 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 83217 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 83217.
| ZIP | City | Distance |
|---|---|---|
| 83246 | Lava Hot Springs, ID | 12.6 mi |
| 83245 | Inkom, ID | 14.6 mi |
| 83250 | Mccammon, ID | 15.5 mi |
| 83241 | Grace, ID | 20 mi |
| 83201 | Pocatello, ID | 24 mi |
| 83214 | Arimo, ID | 24.1 mi |
| 83202 | Pocatello, ID | 24.8 mi |
| 83276 | Soda Springs, ID | 24.9 mi |
| 83209 | Pocatello, ID | 25.5 mi |
| 83234 | Downey, ID | 26 mi |
| 83204 | Pocatello, ID | 29.6 mi |
| 83203 | Fort Hall, ID | 30.3 mi |
Questions about 83217
What is the ZIP+4 code for 83217?
83217 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 83217, you need to look up a specific street address to get them.
What city is 83217?
83217 is assigned to Bancroft, Idaho, in Caribou 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.