ZIP Code 87421

87421 is one of New Mexico's ZIP codes, delivering to addresses in Waterflow, San Juan County.

City: Waterflow
County: San Juan County
State: New Mexico
Prefix: 874xx

Where this code sits

87421 is part of the 874xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Waterflow.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 87421 delivers to without sharing its boundary.

505 Area code 505

ZIP codes nearest 87421

The ZIP codes whose reference points sit closest to 87421.
ZIP code	Distance	Delivers to
ZIP code 87416	7.2 mi	Fruitland, NM
ZIP code 87417	9.4 mi	Kirtland, NM
ZIP code 87420	14 mi	Shiprock, NM
ZIP code 87401	19 mi	Farmington, NM
ZIP code 87402	21 mi	Farmington, NM
ZIP code 87418	23 mi	La Plata, NM
ZIP code 87415	24 mi	Flora Vista, NM
ZIP code 87499	25 mi	Farmington, 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 87421, plotted from its record coordinates.

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

Scope ZIP code 87421. 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.