ZIP Code 80430 — Coalmont, CO
80430 is a standard (street delivery) ZIP code serving Coalmont, Colorado, in Jackson 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 80430 at a glance
| ZIP code | 80430 |
|---|---|
| Primary city | Coalmont |
| State | Colorado (CO) |
| County | Jackson FIPS 08057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 148 |
| Coordinates | 40.509250, -106.446880 |
How ZIP+4 works in 80430
The four digits after the hyphen encode a delivery segment inside 80430. 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 80430 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 80430.
| ZIP | City | Distance |
|---|---|---|
| 80480 | Walden, CO | 12.5 mi |
| 80473 | Rand, CO | 15.8 mi |
| 80459 | Kremmling, CO | 22.5 mi |
| 80487 | Steamboat Springs, CO | 24 mi |
| 80467 | Oak Creek, CO | 28.3 mi |
| 80434 | Cowdrey, CO | 29.1 mi |
| 80469 | Phippsburg, CO | 34.1 mi |
| 80428 | Clark, CO | 34.1 mi |
| 82063 | Jelm, WY | 34.9 mi |
| 80446 | Granby, CO | 35.8 mi |
| 80483 | Yampa, CO | 36.4 mi |
| 80451 | Hot Sulphur Springs, CO | 38.6 mi |
Questions about 80430
What is the ZIP+4 code for 80430?
80430 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 80430, you need to look up a specific street address to get them.
What city is 80430?
80430 is assigned to Coalmont, Colorado, in Jackson 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.