57642 ZIP Code — Mc Laughlin, SD

Corson County, South Dakota

ZIP code 57642 is located in Mc Laughlin, South Dakota, within Corson County. It covers approximately 693.28 square miles and serves a population of 2,009 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.

About ZIP code 57642

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $71,100. Owner-occupancy sits near the national average at 48%.

Median household income is $56,042. Poverty affects 39% of residents, above the national average. SNAP benefit usage at 28% of households reflects economic stress in the area.

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 — 24% of workers work from home.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of diabetes (17%), smoking (34%) compared to national benchmarks. 23% of residents lack health insurance, above the national average.

Overall, ZIP code 57642 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a high rate of remote workers, and elevated reliance on food assistance.

2,009
population
693.28
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
57642 ZIP code map
Cities in ZIP code 57642

Below are the cities the US Postal Service accepts for ZIP code 57642. Using any city not on this list may result in mail delivery delays.

City Status
Mc Laughlin Acceptable
Mc Laughlin Preferred
Demographics updated 05/2026
Population
Total population 2,009
Population density 3 / sq mi
State FIPS 46
County FIPS 031
Geography
Land area 693.28 sq mi
Water area 34.55 sq mi
Latitude 45.7083
Longitude -101.0181
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 55.4% 61.0% 41.7%
$50k – $100k 29.3% 23.8% 33.8%
$100k – $200k 13.7% 12.9% 20.1%
Over $200k 1.6% 2.3% 4.4%

Demographics & statistics

2,009
Population
3
People per sq mi
26.7
Median age
$56,042
Median household income
$19,750
Per capita income
$71,100
Median home value
$563
Median monthly rent
48.3%
Home ownership
38.5%
Poverty rate
23.7%
Unemployment
395
Housing units
19.8%
Bachelor's or higher

Age distribution

Male Female
87
Under 5
87
78
5–9
79
151
10–14
152
96
15–19
96
70
20–24
71
113
25–34
113
101
35–44
102
89
45–54
90
68
55–59
69
46
60–64
47
57
65–74
58
35
75–84
36
9
85+
9
← Male
Female →

Age summary

GroupCount%
Under 1877038.3%
18 and over1,23961.7%
65 and over20410.2%
Median age26.7 years

Race & ethnicity

American Indian / Alaska Native 75%
White 23.9%
Two or more races 0.6%
Hispanic or Latino 0.2%
Black or African American 0.2%
GroupCount%
American Indian / Alaska Native1,51175%
White48223.9%
Two or more races120.6%
Hispanic or Latino50.2%
Black or African American40.2%

Household income

Income range This ZIP County avg State avg
Under $50k 55.4% 61.0% 41.7%
$50k – $100k 29.3% 23.8% 33.8%
$100k – $200k 13.7% 12.9% 20.1%
Over $200k 1.6% 2.3% 4.4%
Under $10k 10.2%
$10k–$15k 8.8%
$15k–$25k 11.0%
$25k–$35k 9.9%
$35k–$50k 5.9%
$50k–$75k 21.8%
$75k–$100k 11.7%
$100k–$150k 13.5%
$150k–$200k 2.4%
$200k+ 4.9%
Range% of households
Under $10k10.2%
$10k–$15k8.8%
$15k–$25k11.0%
$25k–$35k9.9%
$35k–$50k5.9%
$50k–$75k21.8%
$75k–$100k11.7%
$100k–$150k13.5%
$150k–$200k2.4%
$200k+4.9%
Median income$56,042

Housing

Home values

Under $50k 28.8%
$50k–$100k 33.3%
$100k–$150k 15.9%
$150k–$200k 6.1%
$200k–$300k 14.0%
$300k–$500k 1.1%
$500k–$1M 0.8%

Housing overview

MetricValue
Median home value$71,100
Median rent / month$563
Owner occupied48.3%
Renter occupied51.7%
Vacant19.3%
Single-family detached82.7%
Large apartment buildings0.0%
Mobile homes8.4%
Median rooms5.6
Avg household size (owned)2.93

Year built

Era%
2020 or later0.0%
2010–20192.4%
2000–200913.1%
1990–199912.7%
1980–198910.8%
1970–197914.9%
1960–196919.6%
1950–195911.9%
1940–19493.5%
1939 or earlier11.1%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom4.6%
2 bedrooms23.7%
3 bedrooms37.0%
4 bedrooms29.1%
5+ bedrooms5.6%

Vehicles per household

Vehicles% of households
No vehicle11.5%
1 vehicle30.3%
2 vehicles34.7%
3 or more23.4%

Heating fuel

Fuel type%
Utility gas2.0%
Electricity11.9%
Propane / LP gas80.1%
Fuel oil4.2%
Wood0.5%

Households & families

Household typeCount%
Married-couple family19235.1%
Cohabiting couple305.5%
Male householder, no spouse12222.3%
Female householder, no spouse20337.1%
Households with children under 1825446.4%
Households with seniors (65+)16630.3%
Average household size3.67

Marital status

StatusMaleFemale
Never married55.8%43.5%
Married30.5%29.3%
Separated0.7%2.6%
Widowed5.0%7.1%
Divorced7.9%17.5%

Education

Less than 9th grade 2.3%
Some HS, no diploma 11.8%
HS graduate 32.0%
Some college, no degree 18.7%
Associate's degree 15.5%
Bachelor's degree 15.0%
Graduate / professional 4.8%
Metric%
HS diploma or higher85.9%
Bachelor's or higher19.8%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool314.6%
Kindergarten213.1%
Elementary school37255.1%
High school18527.4%
College / grad school669.8%

Employment

Industry of employment

Education & healthcare 26.0%
Agriculture & mining 23.3%
Retail trade 9.5%
Finance & real estate 6.3%
Arts, food & hospitality 5.9%
Public administration 5.3%
Construction 4.3%
Wholesale trade 4.2%
Other services 4.0%
Transportation & utilities 3.4%
Professional & management 3.4%
Manufacturing 2.4%
Information 2.1%

Occupation

Category%
Management, business & arts51.5%
Service10.9%
Sales & office19.4%
Natural resources & construction9.5%
Production & transportation8.7%

Employment type

Type%
Private sector32.7%
Government42.2%
Self-employed24.1%
Unpaid family workers1.0%

Commute

Method%
Drive alone64.2%
Carpool6.2%
Public transit0.0%
Walk4.9%
Work from home23.9%
Other means0.8%
Avg commute (minutes)19.5

Poverty

All people 38.5%
Under 18 years 52.3%
18 and over 30.1%
Married-couple families 17.7%
Female-led households 49.1%

Income support

Source% of households
Social Security20.8%
Retirement income21.9%
Supplemental Security4.4%
Cash public assistance23.8%
Food stamps / SNAP27.8%

Health indicators

Condition%
Obesity43.9%
High blood pressure36.1%
High cholesterol28.7%
Diabetes16.5%
Heart disease9.5%
Stroke5.8%
Asthma13.2%
Arthritis26.7%
Kidney disease4.6%
Pulmonary disease10.9%
Cancer5.8%
Behavior / access%
Smoking34.1%
Binge drinking18.4%
No physical activity36.0%
Less than 7 hrs sleep33.2%
Depression18.7%
Fair or poor health25.9%
Poor mental health16.2%
Poor physical health16.3%
No health insurance17.0%
Visited doctor (checkup)76.1%
Visited dentist47.4%
Cholesterol screening83.0%
Teeth loss30.8%

Veterans & disability

VeteransCount%
Civilian veterans1088.7%
Disability%
Any disability12.5%
Under 184.4%
18–64 years12.6%
65 and over42.6%

Health insurance coverage

Type%
Private insurance33.3%
Public insurance49.9%
No insurance22.8%
Uninsured under 1910.2%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only1,83591.3%
Spanish20.1%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)2,00299.7%
Born in same state2,00299.7%
Born in different state72235.9%
Foreign born00.0%
Naturalized citizen70.3%
Not a US citizen342.9%

Ancestry

AncestryCount%
Arab974.8%
Italian763.8%
Polish432.1%
AncestryCount%
French241.2%
Dutch40.2%

Technology access

Metric% of households
Computer access27.2%
Internet access73.9%

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

Frequently asked questions about ZIP code 57642

What city is ZIP code 57642 in?

ZIP code 57642 is primarily assigned to Mc Laughlin, South Dakota.

What county is ZIP code 57642 in?

ZIP code 57642 falls within Corson County, South Dakota.

What is the poverty rate in ZIP code 57642?

39% of residents in ZIP code 57642 live below the poverty line, above the national average.

Is ZIP code 57642 family-oriented?

38% of residents in ZIP code 57642 are under 18, reflecting a younger, family-oriented community.

What is the typical home value in ZIP code 57642?

The median home value in ZIP code 57642 is $71,100.

What are the health statistics for ZIP code 57642?

Health data for ZIP code 57642 shows elevated rates of diabetes (17%) and smoking (34%) compared to national benchmarks.

What timezone is ZIP code 57642 in?

ZIP code 57642 observes the MST timezone.

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