Postal Codes

57717 ZIP Code

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ZIP code 57717 covers Belle Fourche, South Dakota, with a population of about 8,711 and a median household income of $71,326.

Population
8,7116 per square mile
Median age
38.3about the US average
Median household income
$71,326about the South Dakota median
Poverty rate
6.7%5.7 points below the US average
Typical home value
$353,591up 9.1% in five years
Median rent
$937about the South Dakota median
Degree or higher
19%16 points below the US average
Homeownership
79%14 points above the US average
Time zone
Mountain UTC-07:00observes daylight saving time
Businesses
322

Where 57717 is

Belle Fourche, South Dakota — 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

Population8,711
Median age38.3
Family households63.4%
Born outside the US0.7%
Speaks a language other than English at home1.9%
White (non-Hispanic)88.8%
Black (non-Hispanic)0%
Asian (non-Hispanic)0.2%
Hispanic or Latino5%
Veterans8%
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$71,326
Income per person$36,718
Poverty rate6.7%
Households on SNAP or cash assistance9.3%

Household income distribution

Under $10k4.2%
$10–15k3.2%
$15–20k5.2%
$20–25k4.7%
$25–30k6.5%
$30–35k1.7%
$35–40k5.5%
$40–45k5.5%
$45–50k3.3%
$50–60k5.6%
$60–75k7.0%
$75–100k14.5%
$100–125k9.6%
$125–150k8.6%
$150–200k9.3%
$200k or more5.7%

Income as declared to the IRS

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

Tax returns filed4,050
Mean adjusted gross income$67,960
Returns declaring $200,000 or more3.5%
Returns, under $25k29.4%
Returns, $25k–$50k25.7%
Returns, $50k–$75k15.6%
Returns, $75k–$100k10.6%
Returns, $100k–$200k15.3%
Returns, $200k or more3.5%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$215,000
Median gross rent$937
Rent as a share of household income27.1%
Owner-occupied79%
Vacant homes9.3%
Median year built1982

What the homes are

Detached house60.2%
Attached house5.1%
2 to 4 units5.2%
5 to 19 units2.6%
20 or more units3.3%
Mobile home23.1%
Boat, RV or van0.4%
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$353,591as of 2026-07
Typical home value, 1 yearup 2%
Typical home value, 5 yearsup 9.1%
Typical home value, 10 yearsup 48.8%
Typical home value since 2000
201220192026$388,849$198,643

$198,643 in 2012 to $353,591 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate4.4%
Bachelor's degree or higher19%
High school diploma or higher87.6%
Works from home8.5%
Drives to work alone75%
Takes public transport0.3%
Commutes 45 minutes or more9.6%
Health

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

Obesity35.9% 2.5 pts above the national average of 33.4%
Diagnosed diabetes12.5% 0.5 pts above the national average of 12%
Currently smokes17% 3.8 pts above the national average of 13.2%
High blood pressure35.8% 1.7 pts above the national average of 34.1%
Fair or poor general health19.3% 1 pts below the national average of 20.3%
No health insurance (18–64)9.8% 1.5 pts below the national average of 11.3%
Depression21.7% same as the national average of 21.9%
No leisure-time physical activity27.8% 2.4 pts above the national average of 25.4%
Arthritis29.2% 4.1 pts above the national average of 25.1%
Binge drinking18.1% 2.1 pts above the national average of 16%
Taking blood pressure medication77.4% 2.7 pts above the national average of 74.7%
Cancer (non-skin)10% 2.3 pts above the national average of 7.7%
Current asthma10.7% same as the national average of 10.4%
Coronary heart disease7.8% 1.6 pts above the national average of 6.2%
Routine check-up in past year76% 0.7 pts below the national average of 76.7%
Cholesterol screening85% 0.9 pts below the national average of 85.9%
Cognitive disability14.8% same as the national average of 14.8%
Colorectal screening66.2% 1.9 pts above the national average of 64.3%
COPD8.2% 1.6 pts above the national average of 6.6%
Visited a dentist65.9% 4.6 pts above the national average of 61.3%
Any disability32.2% 1.5 pts above the national average of 30.7%
Lacks emotional support23.5% 1.3 pts below the national average of 24.8%
Food insecurity12.1% 5 pts below the national average of 17.1%
Received food stamps9% 5.3 pts below the national average of 14.3%
Hearing disability9.2% 2.5 pts above the national average of 6.7%
High cholesterol35.4% 0.8 pts below the national average of 36.2%
Housing insecurity10% 3.8 pts below the national average of 13.8%
Independent living disability8.7% same as the national average of 8.4%
Lacks transport8.1% 1.1 pts below the national average of 9.2%
Loneliness31% 3.4 pts below the national average of 34.4%
Mammography use77% 1.1 pts above the national average of 75.9%
Poor mental health (14+ days)16% 0.8 pts below the national average of 16.8%
Mobility disability14.9% 0.9 pts above the national average of 14%
Poor physical health (14+ days)13.9% same as the national average of 13.5%
Self-care disability4.2% same as the national average of 4%
Utility shut-off threat6.9% 1.9 pts below the national average of 8.8%
Sleeps under 7 hours31.3% 5.1 pts below the national average of 36.4%
Stroke4% 0.6 pts above the national average of 3.4%
All natural teeth lost16.2% 3.2 pts above the national average of 13%
Vision disability5.2% same as the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments322
People employed1,944
Annual payroll$78,143,000
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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 85.7% of US census tracts
FEMA ratingRelatively Moderate to Relatively High across the 8 census tracts this ZIP code covers
Expected annual loss87.6 out of 100
Community resilience18.8 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.

Winter weather98.7Very High at its worst in this ZIP code
Wildfire97.9Relatively High at its worst in this ZIP code
Hail96.8Very High at its worst in this ZIP code
Cold wave95.5Very High at its worst in this ZIP code
Strong wind92.6Very High at its worst in this ZIP code
Landslide86.6Relatively Low at its worst in this ZIP code
River flooding85.6Relatively High at its worst in this ZIP code
Drought83Relatively Low at its worst in this ZIP code
Lightning77.2Very High at its worst in this ZIP code
Ice storm65.1Relatively Moderate at its worst in this ZIP code
Tornado60.6Relatively Moderate at its worst in this ZIP code
Earthquake41.4Relatively Low at its worst in this ZIP code
Heat wave11.6Relatively Low at its worst in this ZIP code
Avalanche0.8Very Low at its worst in this ZIP code
Compared with South Dakota 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 ZIPSouth DakotaUnited States
Median household income$71,326$72,421$78,538
Income per person$36,718$38,880$43,289
Poverty rate6.7%12%12.4%
Median home value$215,000$236,800$303,400
Median gross rent$937$912$1,348
Homeownership79%68.6%65%
Bachelor's degree or higher19%31.1%35%
Unemployment rate4.4%3%5.2%
Works from home8.5%9.3%13.5%
Born outside the US0.7%3.9%13.9%
Median age38.337.738.7
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 stationBELLE FOURCHE, SD US0.9 km away
Rain in a year18 in
Snow in a year42 in

Average high and low by month

January36.5°F / 12.9°F0.44 in rain, 5.5 in snow
February39.1°F / 15.1°F0.51 in rain, 6.7 in snow
March49.7°F / 23.9°F1.16 in rain, 7.2 in snow
April59°F / 32.8°F2.11 in rain, 5.2 in snow
May68.5°F / 43.5°F3.04 in rain, 1.3 in snow
June79.3°F / 53.7°F2.96 in rain
July87.3°F / 59.7°F1.96 in rain
August86.6°F / 56.8°F1.5 in rain
September77.8°F / 46.5°F1.34 in rain
October62.2°F / 35°F1.72 in rain, 2.6 in snow
November47.5°F / 23.6°F0.66 in rain, 3.9 in snow
December37.1°F / 14.9°F0.59 in rain, 9.8 in snow
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 supermarket6% of this ZIP code's area
Far from a supermarket6% of this ZIP code's area
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 6 school districts, so the address decides which one, not the ZIP code.

Belle Fourche School District 09-158.4% of this ZIP code's land area
Crook County School District 113.8% of this ZIP code's land area
Alzada Elementary School District9.2% of this ZIP code's land area
Carter County High School District9.2% of this ZIP code's land area
Harding County School District 31-17.8% of this ZIP code's land area
Newell School District 09-21.1% 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 vulnerability52more vulnerable than 52% of US census tracts
Socioeconomic status48more vulnerable than 48% of US census tracts
Household characteristics44more vulnerable than 44% of US census tracts
Racial and ethnic minority status17more vulnerable than 17% of US census tracts
Housing type and transport72more vulnerable than 72% of US census tracts
Walkability5.3 out of 20Least walkable
Nearby ZIP codes

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

57779 Saint Onge, SD16.7 km away
57799 Spearfish, SD19.8 km away
57783 Spearfish, SD19.9 km away
82712 Beulah, WY23.5 km away
57762 Nisland, SD23.7 km away
57793 Whitewood, SD28.6 km away
82710 Aladdin, WY29.2 km away
57732 Deadwood, SD34 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.

Butte County65.5% of this ZIP code's land area
Crook County15.2% of this ZIP code's land area
Carter County10.2% of this ZIP code's land area
Harding County8.6% of this ZIP code's land area
Lawrence County0.6% of this ZIP code's land area
Time zoneMountain (UTC-07:00 standard)
Daylight saving timeObserved
Land area1364.43 sq mi
Water area13.02 sq mi
Population density6 people per sq mi
Latitude, longitude44.6723, -103.8396

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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