57457 ZIP Code — Long Lake, SD

Mcpherson County, South Dakota

ZIP code 57457 is located in Long Lake, South Dakota, within Mcpherson County. It covers approximately 147.76 square miles and serves a population of 88 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

population

147.76

sq mi land

Standard

ZIP type

Central (CT)

timezone

57457 ZIP code map

Cities in ZIP code 57457

Below are the cities the US Postal Service accepts for ZIP code 57457. Using any city not on this list may result in mail delivery delays.

City	Status
Long Lake	Preferred

Nearby ZIP codes

57456 Leola (10.4 mi) 58413 Ashley (16.5 mi) 58439 Forbes (18.8 mi)

Demographics updated 05/2026

Population
Total population	88
Population density	1 / sq mi
State FIPS	46
County FIPS	089

Geography
Land area	147.76 sq mi
Water area	4.94 sq mi
Latitude	45.8657
Longitude	-99.1446
Timezone	Central (CT)
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	25.7%	50.3%	41.7%
$50k – $100k	68.6%	27.5%	33.8%
$100k – $200k	0.0%	18.0%	20.1%
Over $200k	5.7%	4.2%	4.4%

Demographics & statistics

Population

People per sq mi

48.9

Median age

Median household income

$58,258

Per capita income

Median home value

Median monthly rent

76.2%

Home ownership

1.1%

Poverty rate

0.0%

Unemployment

Housing units

9.7%

Bachelor's or higher

Age distribution

Male Female

5–9

10–14

15–19

25–34

35–44

45–54

55–59

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	16	18.2%
18 and over	72	81.8%
65 and over	23	26.1%
Median age	48.9 years

Race & ethnicity

White 100%

Group	Count	%
White	88	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.7%	50.3%	41.7%
$50k – $100k	68.6%	27.5%	33.8%
$100k – $200k	0.0%	18.0%	20.1%
Over $200k	5.7%	4.2%	4.4%

$10k–$15k 2.4%

$15k–$25k 9.5%

$25k–$35k 16.7%

$50k–$75k 23.8%

$75k–$100k 4.8%

$100k–$150k 31.0%

$200k+ 11.9%

Range	% of households
$10k–$15k	2.4%
$15k–$25k	9.5%
$25k–$35k	16.7%
$50k–$75k	23.8%
$75k–$100k	4.8%
$100k–$150k	31.0%
$200k+	11.9%
Median income	$0

Housing

Home values

Under $50k 43.8%

$50k–$100k 18.8%

$100k–$150k 6.3%

$200k–$300k 15.6%

$500k–$1M 15.6%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$0
Owner occupied	76.2%
Renter occupied	23.8%
Vacant	61.1%
Single-family detached	89.8%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	7.4
Avg household size (owned)	1.38

Year built

Era	%
2020 or later	0.0%
2010–2019	4.6%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	3.7%
1970–1979	5.6%
1960–1969	11.1%
1950–1959	13.0%
1940–1949	16.7%
1939 or earlier	45.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.8%
2 bedrooms	28.7%
3 bedrooms	16.7%
4 bedrooms	39.8%
5+ bedrooms	12.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	26.2%
2 vehicles	21.4%
3 or more	52.4%

Heating fuel

Fuel type	%
Electricity	45.2%
Propane / LP gas	28.6%
Fuel oil	26.2%

Households & families

Household type	Count	%
Married-couple family	19	45.2%
Cohabiting couple	0	0.0%
Male householder, no spouse	23	54.8%
Female householder, no spouse	0	0.0%
Households with children under 18	7	16.7%
Households with seniors (65+)	19	45.2%
Average household size	2.10

Marital status

Status	Male	Female
Never married	24.5%	20.8%
Married	60.4%	79.2%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	15.1%	0.0%

Education

Less than 9th grade 4.2%

Some HS, no diploma 2.8%

HS graduate 25.0%

Some college, no degree 36.1%

Associate's degree 22.2%

Bachelor's degree 0.0%

Graduate / professional 9.7%

Metric	%
HS diploma or higher	93.1%
Bachelor's or higher	9.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	8	61.5%
High school	5	38.5%
College / grad school	0	0.0%

Employment

Industry of employment

Agriculture & mining 58.8%

Public administration 13.7%

Construction 9.8%

Professional & management 9.8%

Transportation & utilities 3.9%

Finance & real estate 3.9%

Occupation

Category	%
Management, business & arts	25.5%
Service	0.0%
Sales & office	9.8%
Natural resources & construction	64.7%
Production & transportation	0.0%

Employment type

Type	%
Private sector	54.9%
Government	17.6%
Self-employed	27.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	60.8%
Carpool	3.9%
Public transit	0.0%
Walk	31.4%
Work from home	0.0%
Other means	3.9%
Avg commute (minutes)	12.2

Poverty

All people 1.1%

Under 18 years 0.0%

18 and over 1.4%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	40.5%
Retirement income	14.3%
Supplemental Security	9.5%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	38.8%
High blood pressure	41.0%
High cholesterol	38.8%
Diabetes	13.2%
Heart disease	10.2%
Stroke	4.7%
Asthma	8.7%
Arthritis	33.0%
Kidney disease	4.2%
Pulmonary disease	9.1%
Cancer	9.9%

Behavior / access	%
Smoking	19.5%
Binge drinking	16.0%
No physical activity	29.4%
Less than 7 hrs sleep	28.0%
Depression	13.9%
Fair or poor health	15.9%
Poor mental health	9.2%
Poor physical health	11.7%
No health insurance	13.8%
Visited doctor (checkup)	79.2%
Visited dentist	65.7%
Cholesterol screening	93.4%
Teeth loss	16.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	6	8.3%

Disability	%
Any disability	5.7%
Under 18	0.0%
18–64 years	6.1%
65 and over	8.7%

Health insurance coverage

Type	%
Private insurance	90.9%
Public insurance	30.7%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	88	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	88	100.0%
Born in same state	88	100.0%
Born in different state	56	63.6%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	9	10.2%
Italian	5	5.7%

Ancestry	Count	%
Polish	3	3.4%

Technology access

Metric	% of households
Computer access	47.7%
Internet access	73.8%

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

Frequently asked questions about ZIP code 57457

What city is ZIP code 57457 in?

ZIP code 57457 is primarily assigned to Long Lake, South Dakota.

What county is ZIP code 57457 in?

ZIP code 57457 falls within Mcpherson County, South Dakota.

Does ZIP code 57457 have an older population?

26% of residents in ZIP code 57457 are 65 or older, above the national average of ~17%.

How educated is the population of ZIP code 57457?

10% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 57457 have a large retiree population?

41% of households in ZIP code 57457 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 57457?

ZIP code 57457 has an estimated population of 88 residents, with a density of 1 people per square mile.

What timezone is ZIP code 57457 in?

ZIP code 57457 observes the CST timezone.