ZIP Code 83810 — Cataldo, ID
83810 is a standard (street delivery) ZIP code serving Cataldo, 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 83810 at a glance
| ZIP code | 83810 |
|---|---|
| Primary city | Cataldo |
| State | Idaho (ID) |
| County | Kootenai FIPS 16055 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 1,412 |
| Coordinates | 47.543260, -116.455250 |
How ZIP+4 works in 83810
The four digits after the hyphen encode a delivery segment inside 83810. 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 83810 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 83810.
| ZIP | City | Distance |
|---|---|---|
| 83842 | Medimont, ID | 8.4 mi |
| 83868 | Smelterville, ID | 12.7 mi |
| 83833 | Harrison, ID | 13.1 mi |
| 83850 | Pinehurst, ID | 13.5 mi |
| 83839 | Kingston, ID | 13.8 mi |
| 83814 | Coeur D Alene, ID | 15.5 mi |
| 83837 | Kellogg, ID | 17 mi |
| 83815 | Coeur D Alene, ID | 19.9 mi |
| 83835 | Hayden, ID | 20 mi |
| 83861 | Saint Maries, ID | 21.1 mi |
| 83849 | Osburn, ID | 21.5 mi |
| 83876 | Worley, ID | 23.1 mi |
Questions about 83810
What is the ZIP+4 code for 83810?
83810 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 83810, you need to look up a specific street address to get them.
What city is 83810?
83810 is assigned to Cataldo, 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?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.