ZIP Code 59230

59230 is one of Montana's ZIP codes, delivering to addresses in Glasgow, Valley County.

City: Glasgow
County: Valley County
State: Montana
Prefix: 592xx

Where this code sits

59230 is part of the 592xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Glasgow.

Glasgow Montana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59230 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59230

The ZIP codes whose reference points sit closest to 59230.
ZIP code	Distance	Delivers to
ZIP code 59248	13 mi	Nashua, MT
ZIP code 59231	14 mi	Saint Marie, MT
ZIP code 59223	15 mi	Fort Peck, MT
ZIP code 59273	17 mi	Vandalia, MT
ZIP code 59241	23 mi	Hinsdale, MT
ZIP code 59225	27 mi	Frazer, MT
ZIP code 59244	30 mi	Larslan, MT
ZIP code 59260	38 mi	Richland, 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 59230, plotted from its record coordinates.

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

Scope ZIP code 59230. 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.