ZIP Code 81520 — Clifton, CO
81520 is a standard (street delivery) ZIP code serving Clifton, Colorado, in Mesa 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 81520 at a glance
| ZIP code | 81520 |
|---|---|
| Primary city | Clifton |
| State | Colorado (CO) |
| County | Mesa FIPS 08077 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 12,892 |
| Coordinates | 39.109620, -108.435610 |
How ZIP+4 works in 81520
The four digits after the hyphen encode a delivery segment inside 81520. 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 81520 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 81520.
| ZIP | City | Distance |
|---|---|---|
| 81504 | Grand Junction, CO | 3.3 mi |
| 81526 | Palisade, CO | 6 mi |
| 81503 | Grand Junction, CO | 6.1 mi |
| 81506 | Grand Junction, CO | 6.3 mi |
| 81501 | Grand Junction, CO | 6.4 mi |
| 81505 | Grand Junction, CO | 10.3 mi |
| 81507 | Grand Junction, CO | 12.4 mi |
| 81643 | Mesa, CO | 15.3 mi |
| 81524 | Loma, CO | 19.9 mi |
| 81521 | Fruita, CO | 22.2 mi |
| 81646 | Molina, CO | 23.8 mi |
| 81418 | Eckert, CO | 24.7 mi |
Questions about 81520
What is the ZIP+4 code for 81520?
81520 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 81520, you need to look up a specific street address to get them.
What city is 81520?
81520 is assigned to Clifton, Colorado, in Mesa 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.