ZIP Code 83858 — Rathdrum, ID
83858 is a standard (street delivery) ZIP code serving Rathdrum, Idaho, in Kootenai 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 83858 at a glance
| ZIP code | 83858 |
|---|---|
| Primary city | Rathdrum |
| State | Idaho (ID) |
| County | Kootenai FIPS 16055 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 20,137 |
| Coordinates | 47.852450, -116.901730 |
How ZIP+4 works in 83858
The four digits after the hyphen encode a delivery segment inside 83858. 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 83858 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 83858.
| ZIP | City | Distance |
|---|---|---|
| 83869 | Spirit Lake, ID | 8.9 mi |
| 83854 | Post Falls, ID | 9.3 mi |
| 99025 | Newman Lake, WA | 9.6 mi |
| 83815 | Coeur D Alene, ID | 10.3 mi |
| 83835 | Hayden, ID | 11.5 mi |
| 83804 | Blanchard, ID | 13.2 mi |
| 99021 | Mead, WA | 13.2 mi |
| 83801 | Athol, ID | 13.9 mi |
| 99027 | Otis Orchards, WA | 14.3 mi |
| 83814 | Coeur D Alene, ID | 16.3 mi |
| 99019 | Liberty Lake, WA | 16.6 mi |
| 99003 | Chattaroy, WA | 17.9 mi |
Questions about 83858
What is the ZIP+4 code for 83858?
83858 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 83858, you need to look up a specific street address to get them.
What city is 83858?
83858 is assigned to Rathdrum, Idaho, in Kootenai 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?
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