Postal Codes

59520 ZIP Code

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ZIP code 59520 covers Big Sandy, Montana, with a population of about 1,211 and a median household income of $58,667.

Population
1,2111 per square mile
Median age
40.21.5 points above the US average
Median household income
$58,66716% below the Montana median
Poverty rate
8%4.4 points below the US average
Typical home value
$281,412up 51.6% in five years
Degree or higher
18%17 points below the US average
Homeownership
60.4%4.6 points below the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
39

Where 59520 is

Big Sandy, Montana — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population1,211
Median age40.2
Family households64.4%
Born outside the US1.5%
Speaks a language other than English at home0.4%
White (non-Hispanic)84.1%
Black (non-Hispanic)0.7%
Asian (non-Hispanic)0.4%
Hispanic or Latino0%
Veterans4.3%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$58,667
Income per person$32,235
Poverty rate8%
Households on SNAP or cash assistance16.4%

Household income distribution

Under $10k3.9%
$10–15k1.9%
$15–20k5.6%
$20–25k2.3%
$25–30k3.7%
$30–35k6.5%
$35–40k2.3%
$40–45k2.8%
$45–50k12.0%
$50–60k10.9%
$60–75k5.6%
$75–100k10.4%
$100–125k12.3%
$125–150k6.7%
$150–200k7.4%
$200k or more5.8%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed460
Mean adjusted gross income$61,496
Returns declaring $200,000 or more4.3%
Returns, under $25k30.4%
Returns, $25k–$50k23.9%
Returns, $50k–$75k17.4%
Returns, $75k–$100k10.9%
Returns, $100k–$200k13.0%
Returns, $200k or more4.3%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$123,900
Rent as a share of household income9%
Owner-occupied60.4%
Vacant homes20%
Median year built1964

What the homes are

Detached house80%
2 to 4 units0.4%
5 to 19 units10.2%
20 or more units0.9%
Mobile home8.5%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$281,412as of 2026-07
Typical home value, 1 yearup 14.9%
Typical home value, 5 yearsup 51.6%
Typical home value, 10 yearsup 156.2%
Typical home value since 2000
201620212026$281,412$109,838

$109,838 in 2016 to $281,412 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate8%
Bachelor's degree or higher18%
High school diploma or higher93.8%
Works from home19.1%
Drives to work alone59.4%
Takes public transport1.1%
Commutes 45 minutes or more8.2%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity35.7% 2.3 pts above the national average of 33.4%
Diagnosed diabetes12.8% 0.8 pts above the national average of 12%
Currently smokes16.9% 3.7 pts above the national average of 13.2%
High blood pressure39.3% 5.2 pts above the national average of 34.1%
Fair or poor general health22.3% 2 pts above the national average of 20.3%
No health insurance (18–64)10.4% 0.9 pts below the national average of 11.3%
Depression24.4% 2.5 pts above the national average of 21.9%
No leisure-time physical activity25.5% same as the national average of 25.4%
Arthritis33.1% 8 pts above the national average of 25.1%
Binge drinking17.7% 1.7 pts above the national average of 16%
Taking blood pressure medication77.8% 3.1 pts above the national average of 74.7%
Cancer (non-skin)10.6% 2.9 pts above the national average of 7.7%
Current asthma11.6% 1.2 pts above the national average of 10.4%
Coronary heart disease8.9% 2.7 pts above the national average of 6.2%
Routine check-up in past year74.2% 2.5 pts below the national average of 76.7%
Cholesterol screening82.7% 3.2 pts below the national average of 85.9%
Cognitive disability15.7% 0.9 pts above the national average of 14.8%
Colorectal screening63.4% 0.9 pts below the national average of 64.3%
COPD9.6% 3 pts above the national average of 6.6%
Visited a dentist55.7% 5.6 pts below the national average of 61.3%
Any disability35.9% 5.2 pts above the national average of 30.7%
Lacks emotional support22.2% 2.6 pts below the national average of 24.8%
Food insecurity14.4% 2.7 pts below the national average of 17.1%
Received food stamps11% 3.3 pts below the national average of 14.3%
Hearing disability11% 4.3 pts above the national average of 6.7%
High cholesterol37.2% 1 pts above the national average of 36.2%
Housing insecurity10.1% 3.7 pts below the national average of 13.8%
Independent living disability9.8% 1.4 pts above the national average of 8.4%
Lacks transport8.5% 0.7 pts below the national average of 9.2%
Loneliness32.3% 2.1 pts below the national average of 34.4%
Mammography use72.8% 3.1 pts below the national average of 75.9%
Poor mental health (14+ days)17.8% 1 pts above the national average of 16.8%
Mobility disability16.9% 2.9 pts above the national average of 14%
Poor physical health (14+ days)16.6% 3.1 pts above the national average of 13.5%
Self-care disability4.6% 0.6 pts above the national average of 4%
Utility shut-off threat7.4% 1.4 pts below the national average of 8.8%
Sleeps under 7 hours34.3% 2.1 pts below the national average of 36.4%
Stroke4.6% 1.2 pts above the national average of 3.4%
All natural teeth lost17.3% 4.3 pts above the national average of 13%
Vision disability5.8% same as the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments39
People employed211
Annual payroll$6,616,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 98.2% of US census tracts
FEMA ratingRelatively High to Very High across the 3 census tracts this ZIP code covers
Expected annual loss96.2 out of 100
Community resilience21.9 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Cold wave99.9Very High at its worst in this ZIP code
Winter weather99.6Very High at its worst in this ZIP code
Lightning99.1Very High at its worst in this ZIP code
River flooding98.4Very High at its worst in this ZIP code
Wildfire96.3Relatively High at its worst in this ZIP code
Drought95.5Relatively Moderate at its worst in this ZIP code
Landslide92.9Relatively Low at its worst in this ZIP code
Strong wind78.3Relatively Moderate at its worst in this ZIP code
Avalanche76.1Relatively Low at its worst in this ZIP code
Hail68.6Relatively Moderate at its worst in this ZIP code
Tornado53.2Relatively Moderate at its worst in this ZIP code
Earthquake46.6Relatively Low at its worst in this ZIP code
Ice storm44.5Relatively Low at its worst in this ZIP code
Heat wave42.7Relatively Low at its worst in this ZIP code
Compared with Montana and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPMontanaUnited States
Median household income$58,667$69,922$78,538
Income per person$32,235$39,842$43,289
Poverty rate8%12%12.4%
Median home value$123,900$338,100$303,400
Median gross rent$1,031$1,348
Homeownership60.4%69.4%65%
Bachelor's degree or higher18%34.5%35%
Unemployment rate8%3.8%5.2%
Works from home19.1%11.6%13.5%
Born outside the US1.5%2.3%13.9%
Median age40.240.238.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationBIG SANDY, MT US2.2 km away
Rain in a year13 in

Average high and low by month

January30.8°F / 9.8°F0.45 in rain
February35.2°F / 13.4°F0.39 in rain
March46°F / 22°F0.47 in rain
April58.4°F / 32.6°F1.27 in rain
May67.9°F / 41.2°F2.07 in rain
June75.9°F / 48.9°F3.12 in rain
July85.9°F / 54.6°F1.4 in rain
August84.8°F / 53.4°F0.99 in rain
September73.7°F / 44.2°F1.16 in rain
October58.7°F / 32.5°F0.93 in rain
November43.6°F / 21.5°F0.6 in rain
December33.5°F / 13°F0.43 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket98% of this ZIP code's area
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Big Sandy K-12 Schools94.4% of this ZIP code's land area
Bear Paw Elementary School District2.3% of this ZIP code's land area
Chinook High School District2.3% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability59more vulnerable than 59% of US census tracts
Socioeconomic status48more vulnerable than 48% of US census tracts
Household characteristics39more vulnerable than 39% of US census tracts
Racial and ethnic minority status49more vulnerable than 49% of US census tracts
Housing type and transport82more vulnerable than 82% of US census tracts
Walkability4.8 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

59521 Box Elder, MT24.2 km away
59460 Loma, MT38.1 km away
59532 Kremlin, MT45.7 km away
59442 Fort Benton, MT46.6 km away
59525 Gildford, MT51.6 km away
59501 Havre, MT53.6 km away
59528 Hingham, MT55.1 km away
59540 Rudyard, MT60 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Chouteau County97.1% of this ZIP code's land area
Blaine County2.3% of this ZIP code's land area
Hill County0.5% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area1120.39 sq mi
Water area5.19 sq mi
Population density1 people per sq mi
Latitude, longitude48.1497, -110.0776

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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