ZIP Code 87931

87931 is one of New Mexico's ZIP codes, delivering to addresses in Caballo, Sierra County.

City: Caballo
County: Sierra County
State: New Mexico
Prefix: 879xx

Where this code sits

87931 is part of the 879xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Caballo.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 87931 delivers to without sharing its boundary.

505 Area code 505

ZIP codes nearest 87931

The ZIP codes whose reference points sit closest to 87931.
ZIP code	Distance	Delivers to
ZIP code 87930	9.6 mi	Arrey, NM
ZIP code 87942	13 mi	Williamsburg, NM
ZIP code 88042	13 mi	Hillsboro, NM
ZIP code 87933	14 mi	Derry, NM
ZIP code 87901	16 mi	Truth Or Consequences, NM
ZIP code 87936	17 mi	Garfield, NM
ZIP code 87935	20 mi	Elephant Butte, NM
ZIP code 87941	21 mi	Salem, 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 87931, plotted from its record coordinates.

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

Scope ZIP code 87931. 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.