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zipcodes.pro — CITY/MT/WESTBY

Westby ZIP code, Montana

The ZIP code for Westby, MT is 59275, and its area code is 406.

USPS city name
1 ZIP code
Population
290
Area code
406
State
Montana

Westby in numbers

About 290 people live in Westby, in 104 households. The median household income is $32,500 a year, 55% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $65,800 (82% below the Montana median), and median gross rent is $358 a month. The median age is 53.3; 18.0% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 15 minutes.

Population290Westby290
Households104Westby104
Median age53.3Westby53.3Montana40.4US 38.9
Median household income$32,500Westby$32,500Montana$72,509US $80,734
Median home value$65,800Westby$65,800Montana$375,800US $332,700
Median gross rent$358Westby$358Montana$1,081US $1,413
Bachelor's degree or higher18.0%Westby18.0%Montana35.2%US 35.7%
Mean commute15.2 minWestby15.2 minMontana19.1 minUS 26.4 min
Population density516 / sq miWestby516 / sq mi

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

ZIP codes addressed as Westby

ZIP codes with the USPS city name Westby
ZIP City Type Population Median income Median home
59275 Westby , MT Standard 436 $49,141 $83,300

Map of Westby ZIP codes

59275

The ZIP codes of Westby, 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 Westby

The nearest larger towns are Grenora, ND (408 people, 18 mi), Plentywood (1,654 people, 24 mi) and Crosby, ND (1,065 people, 35 mi).

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

Cite this page

zipcodes.pro. “Westby, MT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mt/westby

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