ZIP Code 59323

59323 is one of Montana's ZIP codes, delivering to addresses in Colstrip, Rosebud County.

City: Colstrip
County: Rosebud County
State: Montana
Prefix: 593xx

Where this code sits

59323 is part of the 593xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Colstrip.

Colstrip Montana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59323 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59323

The ZIP codes whose reference points sit closest to 59323.
ZIP code	Distance	Delivers to
ZIP code 59043	23 mi	Lame Deer, MT
ZIP code 59327	24 mi	Forsyth, MT
ZIP code 59016	29 mi	Busby, MT
ZIP code 59004	29 mi	Ashland, MT
ZIP code 59003	30 mi	Ashland, MT
ZIP code 59333	32 mi	Hathaway, MT
ZIP code 59010	33 mi	Bighorn, MT
ZIP code 59076	33 mi	Sanders, 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 59323, plotted from its record coordinates.

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

Scope ZIP code 59323. 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.