ZIP Code 59402

59402 is one of Montana's ZIP codes, delivering to addresses in Malmstrom Afb, Cascade County.

City: Malmstrom Afb
County: Cascade County
State: Montana
Prefix: 594xx

Where this code sits

59402 is part of the 594xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Malmstrom Afb.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59402 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59402

The ZIP codes whose reference points sit closest to 59402.
ZIP code	Distance	Delivers to
ZIP code 59403	0.0 mi	Great Falls, MT
ZIP code 59401	1.4 mi	Great Falls, MT
ZIP code 59404	2.0 mi	Great Falls, MT
ZIP code 59414	2.1 mi	Black Eagle, MT
ZIP code 59405	2.4 mi	Great Falls, MT
ZIP code 59406	8.8 mi	Great Falls, MT
ZIP code 59472	9.2 mi	Sand Coulee, MT
ZIP code 59487	14 mi	Vaughn, MT

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 59402, plotted from its record coordinates.

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

Scope ZIP code 59402. 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.