ZIP Code 87831 — San Acacia, NM
87831 is a standard (street delivery) ZIP code serving San Acacia, New Mexico, in Socorro 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 87831 at a glance
| ZIP code | 87831 |
|---|---|
| Primary city | San Acacia |
| State | New Mexico (NM) |
| County | Socorro FIPS 35053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 423 |
| Coordinates | 34.283030, -106.887220 |
How ZIP+4 works in 87831
The four digits after the hyphen encode a delivery segment inside 87831. 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 87831 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 87831.
| ZIP | City | Distance |
|---|---|---|
| 87828 | Polvadera, NM | 5.7 mi |
| 87028 | La Joya, NM | 7.3 mi |
| 87823 | Lemitar, NM | 8 mi |
| 87006 | Bosque, NM | 14.3 mi |
| 87062 | Veguita, NM | 16.4 mi |
| 87801 | Socorro, NM | 16.8 mi |
| 87023 | Jarales, NM | 22.7 mi |
| 87002 | Belen, NM | 24.6 mi |
| 87832 | San Antonio, NM | 30.8 mi |
| 87060 | Tome, NM | 32.9 mi |
| 87031 | Los Lunas, NM | 35.5 mi |
| 87061 | Torreon, NM | 41 mi |
Questions about 87831
What is the ZIP+4 code for 87831?
87831 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 87831, you need to look up a specific street address to get them.
What city is 87831?
87831 is assigned to San Acacia, New Mexico, in Socorro 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.