ZIP Code 87931 — Caballo, NM
87931 is a standard (street delivery) ZIP code serving Caballo, 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 87931 at a glance
| ZIP code | 87931 |
|---|---|
| Primary city | Caballo |
| State | New Mexico (NM) |
| County | Sierra FIPS 35051 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 703 |
| Coordinates | 32.933790, -107.336570 |
How ZIP+4 works in 87931
The four digits after the hyphen encode a delivery segment inside 87931. 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 87931 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 87931.
| ZIP | City | Distance |
|---|---|---|
| 87930 | Arrey, NM | 5.8 mi |
| 87933 | Derry, NM | 10.4 mi |
| 87942 | Williamsburg, NM | 12.3 mi |
| 87936 | Garfield, NM | 13.1 mi |
| 88042 | Hillsboro, NM | 15.7 mi |
| 87941 | Salem, NM | 17.3 mi |
| 87935 | Elephant Butte, NM | 23 mi |
| 87937 | Hatch, NM | 24.4 mi |
| 87901 | Truth Or Consequences, NM | 24.8 mi |
| 87940 | Rincon, NM | 29.9 mi |
| 87939 | Monticello, NM | 32.4 mi |
| 88041 | Hanover, NM | 34 mi |
Questions about 87931
What is the ZIP+4 code for 87931?
87931 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 87931, you need to look up a specific street address to get them.
What city is 87931?
87931 is assigned to Caballo, 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.