ZIP Code 80818 — Genoa, CO
80818 is a standard (street delivery) ZIP code serving Genoa, Colorado, in Lincoln 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 80818 at a glance
| ZIP code | 80818 |
|---|---|
| Primary city | Genoa |
| State | Colorado (CO) |
| County | Lincoln FIPS 08073 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 337 |
| Coordinates | 39.415390, -103.481190 |
How ZIP+4 works in 80818
The four digits after the hyphen encode a delivery segment inside 80818. 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 80818 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 80818.
| ZIP | City | Distance |
|---|---|---|
| 80804 | Arriba, CO | 12.3 mi |
| 80828 | Limon, CO | 15.9 mi |
| 80826 | Limon, CO | 17.6 mi |
| 80815 | Flagler, CO | 21.3 mi |
| 80740 | Lindon, CO | 23.1 mi |
| 80101 | Agate, CO | 25.2 mi |
| 80757 | Woodrow, CO | 26.6 mi |
| 80105 | Deer Trail, CO | 29.4 mi |
| 80801 | Anton, CO | 29.7 mi |
| 80821 | Hugo, CO | 30.6 mi |
| 80830 | Matheson, CO | 31 mi |
| 80834 | Seibert, CO | 32.7 mi |
Questions about 80818
What is the ZIP+4 code for 80818?
80818 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 80818, you need to look up a specific street address to get them.
What city is 80818?
80818 is assigned to Genoa, Colorado, in Lincoln 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.