59520 ZIP Code — Big Sandy, MT

Chouteau County, Montana

ZIP code 59520 is located in Big Sandy, Montana, within Chouteau County. It covers approximately 1,120.39 square miles and serves a population of 1,151 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 406.

About ZIP code 59520

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $119,400. Owner-occupancy sits near the national average at 70%.

Median household income is $55,625. 44% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 20 minutes is near the national average. Remote work is prevalent — 21% of workers work from home.

Educational attainment is near the national average, with 21% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of smoking (20%) compared to national benchmarks.

Overall, ZIP code 59520 reflects a community defined by a high rate of remote workers and a significant Social Security-dependent population.

1,151

population

1,120.39

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

59520 ZIP code map

Cities in ZIP code 59520

Below are the cities the US Postal Service accepts for ZIP code 59520. Using any city not on this list may result in mail delivery delays.

City	Status
Big Sandy	Preferred

Nearby ZIP codes

59460 Loma (15.3 mi)

Demographics updated 06/2026

Population
Total population	1,151
Population density	1,151 / sq mi
State FIPS	30
County FIPS	015

Geography
Land area	1,120.39 sq mi
Water area	5.19 sq mi
Latitude	48.0046
Longitude	-110.1115
Timezone	Mountain (MT)
Area code	406

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.5%	49.6%	44.2%
$50k – $100k	28.4%	30.0%	32.0%
$100k – $200k	16.4%	17.2%	19.2%
Over $200k	1.7%	3.2%	4.7%

Demographics & statistics

1,151

Population

1,151

People per sq mi

46.4

Median age

$55,625

Median household income

$32,893

Per capita income

$119,400

Median home value

Median monthly rent

70.0%

Home ownership

10.0%

Poverty rate

9.0%

Unemployment

457

Housing units

21.4%

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

100

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	245	21.3%
18 and over	906	78.7%
65 and over	279	24.2%
Median age	46.4 years

Race & ethnicity

White 85.6%

Two or more races 8.9%

American Indian / Alaska Native 2.9%

Asian 1.5%

Black or African American 0.7%

Hispanic or Latino 0.4%

Group	Count	%
White	990	85.6%
Two or more races	103	8.9%
American Indian / Alaska Native	33	2.9%
Asian	17	1.5%
Black or African American	8	0.7%
Hispanic or Latino	5	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.5%	49.6%	44.2%
$50k – $100k	28.4%	30.0%	32.0%
$100k – $200k	16.4%	17.2%	19.2%
Over $200k	1.7%	3.2%	4.7%

Under $10k 4.7%

$10k–$15k 4.3%

$15k–$25k 9.5%

$25k–$35k 12.1%

$35k–$50k 17.0%

$50k–$75k 12.7%

$75k–$100k 11.0%

$100k–$150k 18.5%

$150k–$200k 5.8%

$200k+ 4.3%

Range	% of households
Under $10k	4.7%
$10k–$15k	4.3%
$15k–$25k	9.5%
$25k–$35k	12.1%
$35k–$50k	17.0%
$50k–$75k	12.7%
$75k–$100k	11.0%
$100k–$150k	18.5%
$150k–$200k	5.8%
$200k+	4.3%
Median income	$55,625

Housing

Home values

Under $50k 9.5%

$50k–$100k 31.4%

$100k–$150k 18.5%

$150k–$200k 11.1%

$200k–$300k 19.4%

$300k–$500k 6.5%

$1M+ 3.7%

Housing overview

Metric	Value
Median home value	$119,400
Median rent / month	$0
Owner occupied	70.0%
Renter occupied	30.0%
Vacant	22.1%
Single-family detached	79.5%
Large apartment buildings	1.8%
Mobile homes	10.1%
Median rooms	5.9
Avg household size (owned)	2.58

Year built

Era	%
2020 or later	0.0%
2010–2019	3.4%
2000–2009	4.4%
1990–1999	3.9%
1980–1989	16.4%
1970–1979	13.1%
1960–1969	12.4%
1950–1959	17.4%
1940–1949	4.4%
1939 or earlier	24.7%

Bedrooms

Size	% of units
No bedroom (studio)	4.2%
1 bedroom	6.7%
2 bedrooms	27.3%
3 bedrooms	37.6%
4 bedrooms	15.9%
5+ bedrooms	8.2%

Vehicles per household

Vehicles	% of households
No vehicle	8.2%
1 vehicle	21.6%
2 vehicles	39.9%
3 or more	30.4%

Heating fuel

Fuel type	%
Utility gas	55.8%
Electricity	7.8%
Propane / LP gas	32.1%
Wood	2.4%

Households & families

Household type	Count	%
Married-couple family	228	49.1%
Cohabiting couple	13	2.8%
Male householder, no spouse	111	23.9%
Female householder, no spouse	112	24.1%
Households with children under 18	104	22.4%
Households with seniors (65+)	169	36.4%
Average household size	2.42

Marital status

Status	Male	Female
Never married	25.6%	21.9%
Married	55.9%	54.4%
Separated	0.0%	0.0%
Widowed	10.3%	9.3%
Divorced	8.2%	14.4%

Education

Less than 9th grade 2.2%

Some HS, no diploma 4.1%

HS graduate 43.5%

Some college, no degree 21.5%

Associate's degree 7.3%

Bachelor's degree 14.7%

Graduate / professional 6.7%

Metric	%
HS diploma or higher	93.7%
Bachelor's or higher	21.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	11	5.5%
Kindergarten	17	8.5%
Elementary school	112	56.3%
High school	50	25.1%
College / grad school	9	4.5%

Employment

Industry of employment

Education & healthcare 27.0%

Agriculture & mining 24.3%

Construction 10.8%

Arts, food & hospitality 9.1%

Retail trade 8.4%

Public administration 4.9%

Manufacturing 4.6%

Wholesale trade 3.0%

Professional & management 3.0%

Transportation & utilities 2.5%

Other services 1.5%

Finance & real estate 0.8%

Occupation

Category	%
Management, business & arts	49.0%
Service	14.4%
Sales & office	10.8%
Natural resources & construction	18.8%
Production & transportation	6.8%

Employment type

Type	%
Private sector	64.1%
Government	19.4%
Self-employed	14.8%
Unpaid family workers	1.7%

Commute

Method	%
Drive alone	56.3%
Carpool	11.5%
Public transit	1.1%
Walk	9.2%
Work from home	20.7%
Other means	1.1%
Avg commute (minutes)	19.6

Poverty

All people 10.0%

Under 18 years 11.4%

18 and over 9.6%

Married-couple families 5.7%

Female-led households 19.0%

Income support

Source	% of households
Social Security	43.8%
Retirement income	18.1%
Supplemental Security	2.8%
Cash public assistance	4.1%
Food stamps / SNAP	8.6%

Health indicators

Condition	%
Obesity	34.6%
High blood pressure	36.5%
High cholesterol	34.2%
Diabetes	12.5%
Heart disease	9.3%
Stroke	4.4%
Asthma	11.0%
Arthritis	33.6%
Kidney disease	4.0%
Pulmonary disease	10.0%
Cancer	8.2%

Behavior / access	%
Smoking	20.3%
Binge drinking	18.7%
No physical activity	26.3%
Less than 7 hrs sleep	31.7%
Depression	23.9%
Fair or poor health	17.9%
Poor mental health	13.6%
Poor physical health	14.0%
No health insurance	12.6%
Visited doctor (checkup)	72.1%
Visited dentist	57.1%
Cholesterol screening	89.0%
Teeth loss	17.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	40	4.4%

Disability	%
Any disability	15.4%
Under 18	4.1%
18–64 years	14.0%
65 and over	28.3%

Health insurance coverage

Type	%
Private insurance	61.5%
Public insurance	51.3%
No insurance	2.6%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,106	96.1%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,121	97.4%
Born in same state	1,114	96.8%
Born in different state	771	67.0%
Foreign born	7	0.6%
Naturalized citizen	30	2.6%
Not a US citizen	15	50.0%

Ancestry

Ancestry	Count	%
Arab	162	14.1%
Polish	158	13.7%
Italian	109	9.5%
French	108	9.4%

Ancestry	Count	%
English	19	1.7%
German	9	0.8%
Dutch	5	0.4%

Technology access

Metric	% of households
Computer access	40.3%
Internet access	85.8%

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

Frequently asked questions about ZIP code 59520

What city is ZIP code 59520 in?

ZIP code 59520 is primarily assigned to Big Sandy, Montana.

What county is ZIP code 59520 in?

ZIP code 59520 falls within Chouteau County, Montana.

Does ZIP code 59520 have a large retiree population?

44% of households in ZIP code 59520 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 59520?

The median home value in ZIP code 59520 is $119,400.

What is the population of ZIP code 59520?

ZIP code 59520 has an estimated population of 1,151 residents, with a density of 1 people per square mile.

What is the median household income in ZIP code 59520?

The median household income in ZIP code 59520 is $55,625, below the national median of ~$75,000.

What timezone is ZIP code 59520 in?

ZIP code 59520 observes the MST timezone.