ZIP Code 87939 — Monticello, NM
87939 is a standard (street delivery) ZIP code serving Monticello, New Mexico, in Sierra 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 87939 at a glance
| ZIP code | 87939 |
|---|---|
| Primary city | Monticello |
| State | New Mexico (NM) |
| County | Sierra FIPS 35051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 206 |
| Coordinates | 33.403390, -107.365660 |
How ZIP+4 works in 87939
The four digits after the hyphen encode a delivery segment inside 87939. 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 87939 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 87939.
| ZIP | City | Distance |
|---|---|---|
| 87935 | Elephant Butte, NM | 13 mi |
| 87943 | Winston, NM | 18.4 mi |
| 87942 | Williamsburg, NM | 21.6 mi |
| 87901 | Truth Or Consequences, NM | 25.4 mi |
| 87931 | Caballo, NM | 32.4 mi |
| 87832 | San Antonio, NM | 43 mi |
Questions about 87939
What is the ZIP+4 code for 87939?
87939 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 87939, you need to look up a specific street address to get them.
What city is 87939?
87939 is assigned to Monticello, New Mexico, in Sierra 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.