ZIP Code 81633 — Dinosaur, CO
81633 is a standard (street delivery) ZIP code serving Dinosaur, Colorado, in Moffat 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 81633 at a glance
| ZIP code | 81633 |
|---|---|
| Primary city | Dinosaur |
| State | Colorado (CO) |
| County | Moffat FIPS 08081 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Coordinates | 40.376440, -108.509830 |
How ZIP+4 works in 81633
The four digits after the hyphen encode a delivery segment inside 81633. 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 81633 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.
Other ZIP codes in Dinosaur
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 81633.
| ZIP | City | Distance |
|---|---|---|
| 81610 | Dinosaur, CO | 17.5 mi |
| 81640 | Maybell, CO | 21.9 mi |
| 81648 | Rangely, CO | 32.7 mi |
Questions about 81633
What is the ZIP+4 code for 81633?
81633 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 81633, you need to look up a specific street address to get them.
What city is 81633?
81633 is assigned to Dinosaur, Colorado, in Moffat 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.