ZIP Code 87831

87831 is one of New Mexico's ZIP codes, delivering to addresses in San Acacia, Socorro County.

City: San Acacia
County: Socorro County
State: New Mexico
Prefix: 878xx

Where this code sits

87831 is part of the 878xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to San Acacia.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 87831 delivers to without sharing its boundary.

505 Area code 505

ZIP codes nearest 87831

The ZIP codes whose reference points sit closest to 87831.
ZIP code	Distance	Delivers to
ZIP code 87828	1.7 mi	Polvadera, NM
ZIP code 87823	5.0 mi	Lemitar, NM
ZIP code 87028	12 mi	La Joya, NM
ZIP code 87801	13 mi	Socorro, NM
ZIP code 87062	20 mi	Veguita, NM
ZIP code 87006	20 mi	Bosque, NM
ZIP code 87825	21 mi	Magdalena, NM
ZIP code 87023	26 mi	Jarales, NM

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 87831, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 87831. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.