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zipcodes.pro — CITY/MT/ST-MARIE

St. Marie ZIP code, Montana

The ZIP code for St. Marie, MT is 59231, and its area code is 406.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
306
Area code
406
State
Montana

Also written Saint Marie, the spelling the Postal Service uses.

NANPA lists no telephone rate centre for St. Marie itself, so these are the area codes of the nearest one, Nashua (17.4 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to St. Marie uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

St. Marie in numbers

About 306 people live in St. Marie, in 92 households. The median household income is $38,971 a year, 46% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $18,800 (95% below the Montana median). The median age is 37.9; 23.1% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana).

Population306St. Marie306
Households92St. Marie92
Median age37.9St. Marie37.9Montana40.4US 38.9
Median household income$38,971St. Marie$38,971Montana$72,509US $80,734
Median home value$18,800St. Marie$18,800Montana$375,800US $332,700
Bachelor's degree or higher23.1%St. Marie23.1%Montana35.2%US 35.7%
Population density13 / sq miSt. Marie13 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place St. Marie CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Saint Marie

ZIP codes with the USPS city name Saint Marie
ZIP City Type Population Median income Median home
59231 Saint Marie , MT Standard 306 $38,971 $18,800

Other ZIP codes overlapping St. Marie

These ZIP codes cover part of St. Marie but are addressed as somewhere else.

ZIP codes overlapping St. Marie
ZIP City Type Population Median income Median home
59230 Glasgow , MT Standard 4,606 $85,000 $241,000

Map of St. Marie ZIP codes

59231

The ZIP codes of St. Marie, MT, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near St. Marie

The nearest larger towns are Glasgow (3,190 people, 16 mi), Frazer (387 people, 32 mi) and Wolf Point (2,602 people, 45 mi).

Towns near St. Marie
TownPopulationDistance
Glasgow 3,190 15.5 mi

More nearby: every ZIP code in Valley County · Montana ZIP codes

Cite this page

zipcodes.pro. “St. Marie, MT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mt/st-marie

Underlying data is public domain or openly licensed — sources, vintages and licences.