ZIP Code 59859

59859 is one of Montana's ZIP codes, delivering to addresses in Plains, Sanders County.

City: Plains
County: Sanders County
State: Montana
Prefix: 598xx

Where this code sits

59859 is part of the 598xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Plains.

Plains Montana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59859 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59859

The ZIP codes whose reference points sit closest to 59859.
ZIP code	Distance	Delivers to
ZIP code 59856	7.4 mi	Paradise, MT
ZIP code 59845	14 mi	Hot Springs, MT
ZIP code 59866	16 mi	Saint Regis, MT
ZIP code 59848	21 mi	Lonepine, MT
ZIP code 59872	21 mi	Superior, MT
ZIP code 59830	22 mi	De Borgia, MT
ZIP code 59873	24 mi	Thompson Falls, MT
ZIP code 59842	25 mi	Haugan, 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 59859, plotted from its record coordinates.

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

Scope ZIP code 59859. 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.