Saint Marie, MT ZIP code

The ZIP code for Saint Marie (also written St. Marie), Montana is 59231. It is in Valley County.

59231

Population in these ZIPs: 306
Avg. median income: $39,000population-weighted
Typical home value: $18,800population-weighted

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Saint Marie, MT ZIP code list

Saint Marie, MT ZIP codes
ZIP code	Population	Median income	Typical home value
59231	306	$38,971	$18,800

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Saint Marie

Nashua 17 mi
Larslan 19 mi
Vandalia 19 mi
Glasgow 22 mi
Hinsdale 24 mi
Frazer 28 mi
Opheim 31 mi
Glentana 33 mi
Richland 37 mi
Fort Peck 37 mi
Peerless 39 mi
Saco 41 mi

Frequently asked questions

What is the ZIP code for Saint Marie, MT?

The ZIP code for Saint Marie, MT is 59231.

What county is Saint Marie, Montana in?

Saint Marie ZIP codes are in Valley County.