57783 ZIP Code — Spearfish, SD

Lawrence County, South Dakota

ZIP code 57783 is located in Spearfish, South Dakota, within Lawrence County. It covers approximately 213.21 square miles and serves a population of 16,533 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.

About ZIP code 57783

The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $288,500. Owner-occupancy sits near the national average at 61%.

The gap between median ($64,500) and mean household income suggests income inequality — a small number of higher earners pull the average up. 38% 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 17 minutes is near the national average.

Educational attainment is near the national average, with 43% of residents holding a bachelor's degree or higher.

16,533

population

213.21

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

57783 ZIP code map

Cities in ZIP code 57783

Below are the cities the US Postal Service accepts for ZIP code 57783. Using any city not on this list may result in mail delivery delays.

City	Status
Spearfish	Preferred

Nearby ZIP codes

57799 Spearfish (1.8 mi) 57779 Saint Onge (7.9 mi) 82712 Beulah (13 mi) 57793 Whitewood (14.6 mi) 57754 Lead (14.8 mi) 57732 Deadwood (19.2 mi)

Demographics updated 05/2026

Population
Total population	16,533
Population density	78 / sq mi
State FIPS	46
County FIPS	081

Geography
Land area	213.21 sq mi
Water area	0.09 sq mi
Latitude	44.4742
Longitude	-103.8837
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	46.4%	47.8%	41.7%
$50k – $100k	27.7%	29.1%	33.8%
$100k – $200k	20.3%	18.3%	20.1%
Over $200k	5.5%	4.8%	4.4%

Demographics & statistics

16,533

Population

People per sq mi

41.2

Median age

$64,500

Median household income

$43,813

Per capita income

$288,500

Median home value

$909

Median monthly rent

61.0%

Home ownership

10.4%

Poverty rate

2.2%

Unemployment

5,445

Housing units

42.7%

Bachelor's or higher

Age distribution

Male Female

314

Under 5

319

302

5–9

306

569

10–14

578

582

15–19

591

752

20–24

765

891

25–34

906

1,017

35–44

1,033

803

45–54

817

351

55–59

357

795

60–64

808

1,049

65–74

1,067

541

75–84

550

233

85+

237

← Male

Female →

Age summary

Group	Count	%
Under 18	3,024	18.3%
18 and over	13,509	81.7%
65 and over	3,677	22.2%
Median age	41.2 years

Race & ethnicity

White 87.8%

Two or more races 4.8%

Hispanic or Latino 2.6%

American Indian / Alaska Native 1.9%

Other race 1.6%

Asian 0.7%

Black or African American 0.6%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	14,894	87.8%
Two or more races	820	4.8%
Hispanic or Latino	440	2.6%
American Indian / Alaska Native	317	1.9%
Other race	268	1.6%
Asian	113	0.7%
Black or African American	94	0.6%
Native Hawaiian / Pacific Islander	27	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	46.4%	47.8%	41.7%
$50k – $100k	27.7%	29.1%	33.8%
$100k – $200k	20.3%	18.3%	20.1%
Over $200k	5.5%	4.8%	4.4%

Under $10k 2.4%

$10k–$15k 3.3%

$15k–$25k 11.0%

$25k–$35k 9.4%

$35k–$50k 13.0%

$50k–$75k 16.7%

$75k–$100k 14.4%

$100k–$150k 16.0%

$150k–$200k 7.1%

$200k+ 6.6%

Range	% of households
Under $10k	2.4%
$10k–$15k	3.3%
$15k–$25k	11.0%
$25k–$35k	9.4%
$35k–$50k	13.0%
$50k–$75k	16.7%
$75k–$100k	14.4%
$100k–$150k	16.0%
$150k–$200k	7.1%
$200k+	6.6%
Median income	$64,500

Housing

Home values

Under $50k 7.4%

$50k–$100k 7.6%

$100k–$150k 4.8%

$150k–$200k 5.4%

$200k–$300k 28.2%

$300k–$500k 32.1%

$500k–$1M 12.1%

$1M+ 2.4%

Housing overview

Metric	Value
Median home value	$288,500
Median rent / month	$909
Owner occupied	61.0%
Renter occupied	39.0%
Vacant	11.6%
Single-family detached	52.4%
Large apartment buildings	9.3%
Mobile homes	14.3%
Median rooms	5.6
Avg household size (owned)	2.46

Year built

Era	%
2020 or later	0.8%
2010–2019	15.6%
2000–2009	16.4%
1990–1999	15.4%
1980–1989	14.0%
1970–1979	13.6%
1960–1969	6.8%
1950–1959	8.0%
1940–1949	1.4%
1939 or earlier	8.0%

Bedrooms

Size	% of units
No bedroom (studio)	4.6%
1 bedroom	9.1%
2 bedrooms	24.5%
3 bedrooms	37.8%
4 bedrooms	16.2%
5+ bedrooms	7.8%

Vehicles per household

Vehicles	% of households
No vehicle	4.7%
1 vehicle	32.4%
2 vehicles	38.1%
3 or more	24.7%

Heating fuel

Fuel type	%
Utility gas	57.2%
Electricity	33.7%
Propane / LP gas	5.5%
Wood	1.2%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	3,148	42.8%
Cohabiting couple	685	9.3%
Male householder, no spouse	1,386	18.8%
Female householder, no spouse	2,137	29.1%
Households with children under 18	1,676	22.8%
Households with seniors (65+)	2,527	34.4%
Average household size	2.22

Marital status

Status	Male	Female
Never married	34.8%	30.0%
Married	50.7%	45.5%
Separated	1.4%	0.4%
Widowed	3.4%	10.3%
Divorced	9.7%	13.7%

Education

Less than 9th grade 2.0%

Some HS, no diploma 3.2%

HS graduate 19.8%

Some college, no degree 22.3%

Associate's degree 10.1%

Bachelor's degree 29.1%

Graduate / professional 13.6%

Metric	%
HS diploma or higher	94.8%
Bachelor's or higher	42.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	68	1.9%
Kindergarten	166	4.7%
Elementary school	1,429	40.7%
High school	740	21.1%
College / grad school	1,111	31.6%

Employment

Industry of employment

Education & healthcare 24.0%

Arts, food & hospitality 18.3%

Retail trade 10.5%

Construction 7.4%

Professional & management 6.9%

Other services 6.6%

Manufacturing 5.4%

Finance & real estate 5.3%

Agriculture & mining 5.0%

Transportation & utilities 3.8%

Public administration 3.7%

Information 1.8%

Wholesale trade 1.3%

Occupation

Category	%
Management, business & arts	37.6%
Service	23.4%
Sales & office	19.7%
Natural resources & construction	9.6%
Production & transportation	9.9%

Employment type

Type	%
Private sector	79.6%
Government	15.2%
Self-employed	5.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.1%
Carpool	6.0%
Public transit	1.1%
Walk	2.9%
Work from home	5.6%
Other means	0.3%
Avg commute (minutes)	17.0

Poverty

All people 10.4%

Under 18 years 10.1%

18 and over 10.4%

Married-couple families 2.4%

Female-led households 19.3%

Income support

Source	% of households
Social Security	38.3%
Retirement income	28.0%
Supplemental Security	2.7%
Cash public assistance	1.1%
Food stamps / SNAP	7.1%

Health indicators

Condition	%
Obesity	26.9%
High blood pressure	28.5%
High cholesterol	30.0%
Diabetes	8.0%
Heart disease	6.5%
Stroke	2.9%
Asthma	8.9%
Arthritis	24.2%
Kidney disease	2.9%
Pulmonary disease	5.4%
Cancer	7.4%

Behavior / access	%
Smoking	16.2%
Binge drinking	21.1%
No physical activity	20.0%
Less than 7 hrs sleep	26.3%
Depression	15.8%
Fair or poor health	10.2%
Poor mental health	11.0%
Poor physical health	8.0%
No health insurance	10.9%
Visited doctor (checkup)	72.2%
Visited dentist	69.0%
Cholesterol screening	87.8%
Teeth loss	12.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,366	10.1%

Disability	%
Any disability	16.3%
Under 18	5.8%
18–64 years	13.3%
65 and over	33.5%

Health insurance coverage

Type	%
Private insurance	74.0%
Public insurance	32.4%
No insurance	10.7%
Uninsured under 19	5.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	15,900	96.2%
Spanish	213	1.3%
Other Indo-European	213	1.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	16,019	96.9%
Born in same state	15,957	96.5%
Born in different state	9,436	57.1%
Foreign born	62	0.4%
Naturalized citizen	514	3.1%
Not a US citizen	254	49.4%

Ancestry

Ancestry	Count	%
Polish	2,026	12.3%
Italian	1,919	11.6%
French	1,612	9.8%
Arab	536	3.2%
English	423	2.6%

Ancestry	Count	%
German	351	2.1%
Dutch	320	1.9%
Norwegian	99	0.6%
Irish	23	0.1%

Technology access

Metric	% of households
Computer access	44.5%
Internet access	93.8%

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

Frequently asked questions about ZIP code 57783

What city is ZIP code 57783 in?

ZIP code 57783 is primarily assigned to Spearfish, South Dakota.

What county is ZIP code 57783 in?

ZIP code 57783 falls within Lawrence County, South Dakota.

Does ZIP code 57783 have a large retiree population?

38% of households in ZIP code 57783 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 57783 have a large veteran population?

10% of civilians in ZIP code 57783 are veterans, above the national average of ~7%.

What is the population of ZIP code 57783?

ZIP code 57783 has an estimated population of 16,533 residents, with a density of 78 people per square mile.

What is the typical home value in ZIP code 57783?

The median home value in ZIP code 57783 is $288,500.

What timezone is ZIP code 57783 in?

ZIP code 57783 observes the MST timezone.