ZIP Code 83840 — Kootenai, ID
83840 is a standard (street delivery) ZIP code serving Kootenai, Idaho, in Bonner 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 83840 at a glance
| ZIP code | 83840 |
|---|---|
| Primary city | Kootenai |
| State | Idaho (ID) |
| County | Bonner FIPS 16017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 653 |
| Coordinates | 48.312630, -116.515060 |
How ZIP+4 works in 83840
The four digits after the hyphen encode a delivery segment inside 83840. 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 83840 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 83840.
| ZIP | City | Distance |
|---|---|---|
| 83852 | Ponderay, ID | 1.1 mi |
| 83825 | Dover, ID | 6.2 mi |
| 83860 | Sagle, ID | 8.3 mi |
| 83864 | Sandpoint, ID | 8.4 mi |
| 83836 | Hope, ID | 12.6 mi |
| 83841 | Laclede, ID | 14.4 mi |
| 83813 | Cocolalla, ID | 15.4 mi |
| 83809 | Careywood, ID | 17.5 mi |
| 83856 | Priest River, ID | 18.3 mi |
| 83847 | Naples, ID | 18.6 mi |
| 83803 | Bayview, ID | 20.7 mi |
| 83811 | Clark Fork, ID | 21.5 mi |
Questions about 83840
What is the ZIP+4 code for 83840?
83840 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 83840, you need to look up a specific street address to get them.
What city is 83840?
83840 is assigned to Kootenai, Idaho, in Bonner 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.