Westby ZIP Codes — Sheridan County, MT

There is one unique ZIP code in Westby, Montana and it is 59275. Area code: 406.

ZIP codes

376.35

sq mi land

14.34

sq mi water

406

area code

Westby, MT ZIP code map

About Westby, MT

Westby is a charming city located in the northern part of Montana, nestled within Sheridan County. Known for its small-town atmosphere, Westby offers a close-knit community that welcomes both residents and visitors alike. The city provides a glimpse into the tranquil lifestyle characteristic of rural Montana, where nature's beauty is always just around the corner.

Location & geography

Westby is positioned in the northeastern region of Montana, with nearby cities such as Williston, North Dakota, located about 63 miles to the east, and Culbertson, Montana, approximately 30 miles to the south. The city's terrain consists largely of expansive plains, and it features a mix of land and water, with a total land area of 376.35 square miles and a water area of 14.34 square miles. This geographical setting makes Westby a scenic spot for outdoor activities and exploration.

Community & economy

The character of Westby is shaped by its friendly residents who often engage in community events and activities, fostering a sense of belonging. The local economy is primarily driven by agriculture, with many residents involved in farming and related industries. Daily life in Westby reflects a slower pace, where neighbors know one another and share in the enjoyment of Montana's natural landscapes.

Transportation

Westby is accessible via Montana Highway 5, which connects the city to surrounding areas and facilitates transportation for residents and visitors. The nearest major airport is Williston Basin International Airport, located about 69 miles to the east, providing additional travel options for those in the area. Public transit options are limited, emphasizing the importance of personal vehicles for getting around.

History

Westby was founded in the early 20th century and has its roots in agriculture and farming, which remain key components of its economy today. The city has seen several significant events over the years, including agricultural fairs that celebrate the region's farming heritage. As a small community, Westby maintains its historical charm while adapting to the changes in modern Montana.

Did you know?

One surprising fact about Westby is that it has only one ZIP code, which is 59275, making it unique in its simplicity. Additionally, Westby is known for its vibrant community gatherings that often include local festivals celebrating its agricultural roots.

ZIP codes for Westby, MT (1)

ZIP code	City	County	Map
59275	Westby	Sheridan	View map

Demographics & statistics

559

Population

49.1

Median age

$67,083

Median household income

$31,543

Per capita income

$82,800

Median home value

$583

Median monthly rent

89.7%

Home ownership

4.7%

Poverty rate

0.0%

Unemployment

255

Housing units

26.2%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	137	24.5%
18 and over	422	75.5%
65 and over	104	18.6%
Median age	49.1 years

Race & ethnicity

White 98.6%

Two or more races 0.7%

Hispanic or Latino 0.4%

Asian 0.2%

American Indian / Alaska Native 0.2%

Group	Count	%
White	553	98.6%
Two or more races	4	0.7%
Hispanic or Latino	2	0.4%
Asian	1	0.2%
American Indian / Alaska Native	1	0.2%

Household income

Under $10k 1.6%

$10k–$15k 2.7%

$15k–$25k 17.3%

$25k–$35k 5.9%

$35k–$50k 9.2%

$50k–$75k 27.0%

$75k–$100k 12.4%

$100k–$150k 16.2%

$150k–$200k 1.1%

$200k+ 6.5%

Range	% of households
Under $10k	1.6%
$10k–$15k	2.7%
$15k–$25k	17.3%
$25k–$35k	5.9%
$35k–$50k	9.2%
$50k–$75k	27.0%
$75k–$100k	12.4%
$100k–$150k	16.2%
$150k–$200k	1.1%
$200k+	6.5%
Median income	$67,083

Housing

Home values

Under $50k 22.3%

$50k–$100k 37.3%

$100k–$150k 23.5%

$150k–$200k 5.4%

$200k–$300k 9.6%

$300k–$500k 1.8%

Housing overview

Metric	Value
Median home value	$82,800
Median rent / month	$583
Owner occupied	89.7%
Renter occupied	10.3%
Vacant	32.5%
Single-family detached	76.6%
Large apartment buildings	0.0%
Mobile homes	16.8%
Median rooms	5.7
Avg household size (owned)	3.10

Year built

Era	%
2020 or later	0.0%
2010–2019	7.7%
2000–2009	3.3%
1990–1999	0.7%
1980–1989	12.8%
1970–1979	18.6%
1960–1969	16.8%
1950–1959	3.3%
1940–1949	11.7%
1939 or earlier	25.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	9.9%
2 bedrooms	24.8%
3 bedrooms	40.9%
4 bedrooms	14.2%
5+ bedrooms	9.5%

Vehicles per household

Vehicles	% of households
No vehicle	2.7%
1 vehicle	9.2%
2 vehicles	36.2%
3 or more	51.9%

Heating fuel

Fuel type	%
Electricity	44.3%
Propane / LP gas	44.3%
Fuel oil	1.6%
Wood	9.7%

Households & families

Household type	Count	%
Married-couple family	107	57.8%
Cohabiting couple	22	11.9%
Male householder, no spouse	45	24.3%
Female householder, no spouse	11	5.9%
Households with children under 18	45	24.3%
Households with seniors (65+)	64	34.6%
Average household size	3.02

Marital status

Status	Male	Female
Never married	35.8%	19.4%
Married	44.2%	44.2%
Separated	2.3%	0.5%
Widowed	4.7%	3.7%
Divorced	13.0%	32.3%

Education

Less than 9th grade 0.2%

Some HS, no diploma 2.7%

HS graduate 40.9%

Some college, no degree 23.4%

Associate's degree 6.5%

Bachelor's degree 15.2%

Graduate / professional 11.0%

Metric	%
HS diploma or higher	97.0%
Bachelor's or higher	26.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	2	4.3%
Kindergarten	7	15.2%
Elementary school	10	21.7%
High school	25	54.3%
College / grad school	2	4.3%

Employment

Industry of employment

Education & healthcare 48.5%

Agriculture & mining 28.6%

Arts, food & hospitality 9.0%

Construction 4.5%

Wholesale trade 2.3%

Other services 1.9%

Professional & management 1.5%

Manufacturing 1.1%

Transportation & utilities 1.1%

Retail trade 0.8%

Information 0.8%

Occupation

Category	%
Management, business & arts	41.0%
Service	28.2%
Sales & office	12.8%
Natural resources & construction	8.3%
Production & transportation	9.8%

Employment type

Type	%
Private sector	72.6%
Government	11.3%
Self-employed	16.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.8%
Carpool	6.1%
Public transit	0.0%
Walk	8.0%
Other means	0.0%
Avg commute (minutes)	22.8

Poverty

All people 4.7%

Under 18 years 3.6%

18 and over 5.0%

Married-couple families 2.8%

Female-led households 0.0%

Income support

Source	% of households
Social Security	28.6%
Retirement income	21.1%
Supplemental Security	1.1%
Cash public assistance	1.6%
Food stamps / SNAP	4.3%

Health indicators

Condition	%
High blood pressure	36.8%
High cholesterol	35.9%
Heart disease	8.8%
Stroke	3.9%
Asthma	9.7%
Arthritis	30.3%
Kidney disease	3.6%
Pulmonary disease	8.2%
Cancer	8.9%

Behavior / access	%
Binge drinking	19.6%
No physical activity	24.4%
Less than 7 hrs sleep	30.4%
Fair or poor health	14.4%
Poor mental health	11.9%
Poor physical health	11.7%
No health insurance	10.6%
Visited doctor (checkup)	72.4%
Visited dentist	63.6%
Cholesterol screening	91.6%
Teeth loss	13.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	28	6.6%

Disability	%
Any disability	4.8%
Under 18	0.0%
18–64 years	2.8%
65 and over	17.3%

Health insurance coverage

Type	%
Private insurance	51.5%
Public insurance	26.7%
Uninsured under 19	64.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	469	83.9%
Spanish	2	0.4%
Other Indo-European	2	0.4%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	553	98.9%
Born in same state	502	89.8%
Born in different state	258	46.2%
Foreign born	51	9.1%
Naturalized citizen	6	1.1%
Not a US citizen	1	16.7%

Ancestry

Ancestry	Count	%
Polish	146	26.1%
French	106	19%
Dutch	50	8.9%

Ancestry	Count	%
Italian	11	2%
Irish	1	0.2%

Technology access

Metric	% of households
Computer access	33.1%
Internet access	89.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Westby, MT have?

Westby, MT has one ZIP code: 59275. Each ZIP code serves a distinct delivery area within the city and surrounding region.