57717 ZIP Code — Belle Fourche, SD

Butte County, South Dakota

ZIP code 57717 is located in Belle Fourche, South Dakota, within Butte County. It covers approximately 1,364.43 square miles and serves a population of 8,468 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.

About ZIP code 57717

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $194,500. Owner-occupancy is high at 78%, well above the national average.

The gap between median ($57,153) and mean household income suggests income inequality — a small number of higher earners pull the average up. 35% 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 21 minutes is near the national average.

College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.

16% of residents lack health insurance, above the national average.

Overall, ZIP code 57717 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

8,468

population

1,364.43

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

57717 ZIP code map

Cities in ZIP code 57717

Below are the cities the US Postal Service accepts for ZIP code 57717. Using any city not on this list may result in mail delivery delays.

City	Status
Belle Fourche	Acceptable
Belle Fourche	Preferred

Nearby ZIP codes

57762 Nisland (19.7 mi)

Demographics updated 05/2026

Population
Total population	8,468
Population density	8,468 / sq mi
State FIPS	46
County FIPS	019

Geography
Land area	1,364.43 sq mi
Water area	13.02 sq mi
Latitude	44.8922
Longitude	-103.7312
Timezone	Mountain (MT)
Area code	605

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.4%	51.7%	41.7%
$50k – $100k	25.6%	29.4%	33.8%
$100k – $200k	18.5%	16.8%	20.1%
Over $200k	2.6%	2.1%	4.4%

Demographics & statistics

8,468

Population

8,468

People per sq mi

38.5

Median age

$57,153

Median household income

$34,518

Per capita income

$194,500

Median home value

$883

Median monthly rent

78.2%

Home ownership

8.2%

Poverty rate

6.3%

Unemployment

3,029

Housing units

18.0%

Bachelor's or higher

Age distribution

Male Female

261

Under 5

272

301

5–9

314

250

10–14

262

258

15–19

269

207

20–24

216

564

25–34

590

468

35–44

489

452

45–54

473

392

55–59

410

216

60–64

225

442

65–74

463

253

75–84

264

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	2,015	23.8%
18 and over	6,453	76.2%
65 and over	1,579	18.6%
Median age	38.5 years

Race & ethnicity

White 85.8%

Two or more races 6.5%

Hispanic or Latino 4.1%

American Indian / Alaska Native 1.6%

Other race 1.5%

Asian 0.4%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	7,576	85.8%
Two or more races	570	6.5%
Hispanic or Latino	360	4.1%
American Indian / Alaska Native	143	1.6%
Other race	129	1.5%
Asian	37	0.4%
Native Hawaiian / Pacific Islander	13	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.4%	51.7%	41.7%
$50k – $100k	25.6%	29.4%	33.8%
$100k – $200k	18.5%	16.8%	20.1%
Over $200k	2.6%	2.1%	4.4%

Under $10k 2.4%

$10k–$15k 4.8%

$15k–$25k 11.9%

$25k–$35k 8.5%

$35k–$50k 14.1%

$50k–$75k 18.5%

$75k–$100k 13.7%

$100k–$150k 11.6%

$150k–$200k 8.1%

$200k+ 6.3%

Range	% of households
Under $10k	2.4%
$10k–$15k	4.8%
$15k–$25k	11.9%
$25k–$35k	8.5%
$35k–$50k	14.1%
$50k–$75k	18.5%
$75k–$100k	13.7%
$100k–$150k	11.6%
$150k–$200k	8.1%
$200k+	6.3%
Median income	$57,153

Housing

Home values

Under $50k 14.0%

$50k–$100k 9.6%

$100k–$150k 12.8%

$150k–$200k 16.5%

$200k–$300k 18.6%

$300k–$500k 23.7%

$500k–$1M 4.4%

$1M+ 0.5%

Housing overview

Metric	Value
Median home value	$194,500
Median rent / month	$883
Owner occupied	78.2%
Renter occupied	21.8%
Vacant	10.9%
Single-family detached	61.8%
Large apartment buildings	2.4%
Mobile homes	21.4%
Median rooms	6.0
Avg household size (owned)	2.64

Year built

Era	%
2020 or later	0.2%
2010–2019	8.4%
2000–2009	14.4%
1990–1999	17.9%
1980–1989	14.8%
1970–1979	10.1%
1960–1969	8.7%
1950–1959	6.0%
1940–1949	2.7%
1939 or earlier	16.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	6.4%
2 bedrooms	26.6%
3 bedrooms	38.8%
4 bedrooms	17.0%
5+ bedrooms	10.3%

Vehicles per household

Vehicles	% of households
No vehicle	3.9%
1 vehicle	29.1%
2 vehicles	30.9%
3 or more	36.2%

Heating fuel

Fuel type	%
Utility gas	57.2%
Electricity	30.6%
Propane / LP gas	7.6%
Wood	3.4%

Households & families

Household type	Count	%
Married-couple family	1,776	53.0%
Cohabiting couple	344	10.3%
Male householder, no spouse	435	13.0%
Female householder, no spouse	795	23.7%
Households with children under 18	1,056	31.5%
Households with seniors (65+)	1,077	32.1%
Average household size	2.49

Marital status

Status	Male	Female
Never married	27.3%	27.5%
Married	59.2%	49.5%
Separated	1.2%	1.6%
Widowed	0.4%	8.8%
Divorced	11.8%	12.5%

Education

Less than 9th grade 4.6%

Some HS, no diploma 6.2%

HS graduate 35.7%

Some college, no degree 24.0%

Associate's degree 11.5%

Bachelor's degree 13.1%

Graduate / professional 4.9%

Metric	%
HS diploma or higher	89.2%
Bachelor's or higher	18.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	152	8.4%
Kindergarten	25	1.4%
Elementary school	902	49.7%
High school	536	29.5%
College / grad school	200	11.0%

Employment

Industry of employment

Education & healthcare 23.7%

Agriculture & mining 15.3%

Manufacturing 11.5%

Retail trade 10.0%

Construction 7.7%

Arts, food & hospitality 6.6%

Finance & real estate 5.4%

Other services 5.4%

Wholesale trade 4.5%

Public administration 4.2%

Professional & management 3.5%

Transportation & utilities 2.1%

Information 0.1%

Occupation

Category	%
Management, business & arts	32.0%
Service	18.4%
Sales & office	18.7%
Natural resources & construction	15.5%
Production & transportation	15.5%

Employment type

Type	%
Private sector	74.3%
Government	18.5%
Self-employed	7.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	74.8%
Carpool	11.8%
Public transit	0.3%
Walk	3.5%
Work from home	9.5%
Other means	0.1%
Avg commute (minutes)	21.2

Poverty

All people 8.2%

Under 18 years 3.2%

18 and over 9.8%

Married-couple families 4.8%

Female-led households 27.3%

Income support

Source	% of households
Social Security	35.1%
Retirement income	21.4%
Supplemental Security	2.5%
Cash public assistance	1.5%
Food stamps / SNAP	10.2%

Health indicators

Condition	%
Obesity	33.9%
High blood pressure	32.1%
High cholesterol	32.2%
Diabetes	9.7%
Heart disease	7.3%
Stroke	3.4%
Asthma	9.3%
Arthritis	24.0%
Kidney disease	3.1%
Pulmonary disease	6.8%
Cancer	7.1%

Behavior / access	%
Smoking	19.8%
Binge drinking	19.1%
No physical activity	24.8%
Less than 7 hrs sleep	29.2%
Depression	16.3%
Fair or poor health	13.1%
Poor mental health	11.5%
Poor physical health	9.9%
No health insurance	13.4%
Visited doctor (checkup)	72.5%
Visited dentist	64.4%
Cholesterol screening	87.4%
Teeth loss	16.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	540	8.4%

Disability	%
Any disability	14.5%
Under 18	0.9%
18–64 years	14.2%
65 and over	33.9%

Health insurance coverage

Type	%
Private insurance	63.9%
Public insurance	36.3%
No insurance	15.5%
Uninsured under 19	15.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	7,935	93.7%
Spanish	64	0.8%
Other Indo-European	64	0.8%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,413	99.4%
Born in same state	8,336	98.4%
Born in different state	5,262	62.1%
Foreign born	77	0.9%
Naturalized citizen	55	0.6%
Not a US citizen	53	96.4%

Ancestry

Ancestry	Count	%
French	1,118	13.2%
Polish	1,001	11.8%
Italian	961	11.3%
Arab	508	6%

Ancestry	Count	%
Dutch	139	1.6%
English	121	1.4%
German	61	0.7%

Technology access

Metric	% of households
Computer access	39.6%
Internet access	94.6%

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

Frequently asked questions about ZIP code 57717

What city is ZIP code 57717 in?

ZIP code 57717 is primarily assigned to Belle Fourche, South Dakota.

What county is ZIP code 57717 in?

ZIP code 57717 falls within Butte County, South Dakota.

Does ZIP code 57717 have a large retiree population?

35% of households in ZIP code 57717 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 57717?

The median home value in ZIP code 57717 is $194,500.

What is the population of ZIP code 57717?

ZIP code 57717 has an estimated population of 8,468 residents, with a density of 6 people per square mile.

What is the median household income in ZIP code 57717?

The median household income in ZIP code 57717 is $57,153, below the national median of ~$75,000.

What timezone is ZIP code 57717 in?

ZIP code 57717 observes the MST timezone.