ZIP Code 88042

88042 is one of New Mexico's ZIP codes, delivering to addresses in Hillsboro, Sierra County.

City: Hillsboro
County: Sierra County
State: New Mexico
Prefix: 880xx

Where this code sits

88042 is part of the 880xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hillsboro.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 88042 delivers to without sharing its boundary.

505 Area code 505

ZIP codes nearest 88042

The ZIP codes whose reference points sit closest to 88042.
ZIP code	Distance	Delivers to
ZIP code 87931	13 mi	Caballo, NM
ZIP code 87930	19 mi	Arrey, NM
ZIP code 88041	21 mi	Hanover, NM
ZIP code 87933	22 mi	Derry, NM
ZIP code 88049	24 mi	Mimbres, NM
ZIP code 87942	24 mi	Williamsburg, NM
ZIP code 87936	24 mi	Garfield, NM
ZIP code 88036	25 mi	Fort Bayard, 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 88042, plotted from its record coordinates.

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

Scope ZIP code 88042. 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.