ZIP Code 81428 — Paonia, CO
81428 is a standard (street delivery) ZIP code serving Paonia, Colorado, in Delta 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 81428 at a glance
| ZIP code | 81428 |
|---|---|
| Primary city | Paonia |
| State | Colorado (CO) |
| County | Delta FIPS 08029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 3,788 |
| Coordinates | 38.959280, -107.598990 |
How ZIP+4 works in 81428
The four digits after the hyphen encode a delivery segment inside 81428. 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 81428 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 81428.
| ZIP | City | Distance |
|---|---|---|
| 81419 | Hotchkiss, CO | 10.4 mi |
| 81434 | Somerset, CO | 12.9 mi |
| 81413 | Cedaredge, CO | 16.6 mi |
| 81624 | Collbran, CO | 21.9 mi |
| 81415 | Crawford, CO | 22.1 mi |
| 81410 | Austin, CO | 22.6 mi |
| 81646 | Molina, CO | 23.5 mi |
| 81418 | Eckert, CO | 24.9 mi |
| 81623 | Carbondale, CO | 28.7 mi |
| 81643 | Mesa, CO | 31.6 mi |
| 81225 | Crested Butte, CO | 31.8 mi |
| 81401 | Montrose, CO | 32.2 mi |
Questions about 81428
What is the ZIP+4 code for 81428?
81428 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 81428, you need to look up a specific street address to get them.
What city is 81428?
81428 is assigned to Paonia, Colorado, in Delta 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.