ZIP Code 80736 — Iliff, CO
80736 is a standard (street delivery) ZIP code serving Iliff, Colorado, in Logan 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 80736 at a glance
| ZIP code | 80736 |
|---|---|
| Primary city | Iliff |
| State | Colorado (CO) |
| County | Logan FIPS 08075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 625 |
| Coordinates | 40.816350, -103.019070 |
How ZIP+4 works in 80736
The four digits after the hyphen encode a delivery segment inside 80736. 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 80736 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 80736.
| ZIP | City | Distance |
|---|---|---|
| 80747 | Peetz, CO | 11.8 mi |
| 80726 | Crook, CO | 14.2 mi |
| 80728 | Fleming, CO | 14.4 mi |
| 80751 | Sterling, CO | 16.3 mi |
| 80745 | Padroni, CO | 20.5 mi |
| 69162 | Sidney, NE | 21.6 mi |
| 80749 | Sedgwick, CO | 24.7 mi |
| 80722 | Atwood, CO | 24.9 mi |
| 80731 | Haxtun, CO | 26.8 mi |
| 80741 | Merino, CO | 29.6 mi |
| 80746 | Paoli, CO | 32.7 mi |
| 69149 | Lodgepole, NE | 33.7 mi |
Questions about 80736
What is the ZIP+4 code for 80736?
80736 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 80736, you need to look up a specific street address to get them.
What city is 80736?
80736 is assigned to Iliff, Colorado, in Logan 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.