ZIP Code 59520

59520 is one of Montana's ZIP codes, delivering to addresses in Big Sandy, Chouteau County.

City: Big Sandy
County: Chouteau County
State: Montana
Prefix: 595xx

Where this code sits

59520 is part of the 595xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Big Sandy.

Big Sandy Montana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59520 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59520

The ZIP codes whose reference points sit closest to 59520.
ZIP code	Distance	Delivers to
ZIP code 59521	15 mi	Box Elder, MT
ZIP code 59460	24 mi	Loma, MT
ZIP code 59532	28 mi	Kremlin, MT
ZIP code 59442	29 mi	Fort Benton, MT
ZIP code 59525	32 mi	Gildford, MT
ZIP code 59501	33 mi	Havre, MT
ZIP code 59528	34 mi	Hingham, MT
ZIP code 59540	37 mi	Rudyard, 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 59520, plotted from its record coordinates.

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

Scope ZIP code 59520. 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.