ZIP Code 59523

59523 is one of Montana's ZIP codes, delivering to addresses in Chinook, Blaine County.

City: Chinook
County: Blaine County
State: Montana
Prefix: 595xx

Where this code sits

59523 is part of the 595xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Chinook.

Chinook Montana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59523 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59523

The ZIP codes whose reference points sit closest to 59523.
ZIP code	Distance	Delivers to
ZIP code 59547	8.8 mi	Zurich, MT
ZIP code 59526	21 mi	Harlem, MT
ZIP code 59501	21 mi	Havre, MT
ZIP code 59529	32 mi	Hogeland, MT
ZIP code 59521	34 mi	Box Elder, MT
ZIP code 59532	38 mi	Kremlin, MT
ZIP code 59542	42 mi	Turner, MT
ZIP code 59535	43 mi	Lloyd, 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 59523, plotted from its record coordinates.

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

Scope ZIP code 59523. 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.