57638 ZIP Code — Lemmon, SD

Perkins County, South Dakota

ZIP code 57638 is located in Lemmon, South Dakota, within Perkins County. It covers approximately 1,012.38 square miles and serves a population of 1,910 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.

About ZIP code 57638

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $97,000. Owner-occupancy is high at 80%, well above the national average.

Median household income is $49,861. Poverty affects 20% of residents, above the national average. 41% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 16 minutes is near the national average.

College attainment at 21% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 57638 reflects a community defined by economic challenges above the national average, high homeownership, and a significant Social Security-dependent population.

1,910

population

1,012.38

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

57638 ZIP code map

Cities in ZIP code 57638

Below are the cities the US Postal Service accepts for ZIP code 57638. Using any city not on this list may result in mail delivery delays.

City	Status
Lemmon	Acceptable
Lemmon	Preferred

Demographics updated 06/2026

Population
Total population	1,910
Population density	1,910 / sq mi
State FIPS	46
County FIPS	105

Geography
Land area	1,012.38 sq mi
Water area	10.42 sq mi
Latitude	45.7523
Longitude	-102.2542
Timezone	Mountain (MT)
Area code	605

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.1%	40.7%	41.7%
$50k – $100k	31.1%	40.0%	33.8%
$100k – $200k	15.5%	16.1%	20.1%
Over $200k	4.3%	3.1%	4.4%

Demographics & statistics

1,910

Population

1,910

People per sq mi

49.8

Median age

$49,861

Median household income

$30,667

Per capita income

$97,000

Median home value

$682

Median monthly rent

79.8%

Home ownership

20.2%

Poverty rate

6.4%

Unemployment

980

Housing units

20.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

121

45–54

122

55–59

60–64

136

65–74

137

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	318	16.6%
18 and over	1,592	83.4%
65 and over	559	29.3%
Median age	49.8 years

Race & ethnicity

White 95.3%

American Indian / Alaska Native 3%

Two or more races 0.7%

Hispanic or Latino 0.6%

Other race 0.5%

Group	Count	%
White	1,831	95.3%
American Indian / Alaska Native	57	3%
Two or more races	13	0.7%
Hispanic or Latino	12	0.6%
Other race	9	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.1%	40.7%	41.7%
$50k – $100k	31.1%	40.0%	33.8%
$100k – $200k	15.5%	16.1%	20.1%
Over $200k	4.3%	3.1%	4.4%

Under $10k 6.8%

$10k–$15k 12.4%

$15k–$25k 11.4%

$25k–$35k 9.7%

$35k–$50k 9.7%

$50k–$75k 12.4%

$75k–$100k 9.3%

$100k–$150k 22.4%

$150k–$200k 2.5%

$200k+ 3.3%

Range	% of households
Under $10k	6.8%
$10k–$15k	12.4%
$15k–$25k	11.4%
$25k–$35k	9.7%
$35k–$50k	9.7%
$50k–$75k	12.4%
$75k–$100k	9.3%
$100k–$150k	22.4%
$150k–$200k	2.5%
$200k+	3.3%
Median income	$49,861

Housing

Home values

Under $50k 30.7%

$50k–$100k 20.3%

$100k–$150k 20.0%

$150k–$200k 12.8%

$200k–$300k 12.2%

$300k–$500k 3.4%

$500k–$1M 0.6%

Housing overview

Metric	Value
Median home value	$97,000
Median rent / month	$682
Owner occupied	79.8%
Renter occupied	20.2%
Vacant	28.9%
Single-family detached	81.5%
Large apartment buildings	1.4%
Mobile homes	11.7%
Median rooms	5.6
Avg household size (owned)	2.40

Year built

Era	%
2020 or later	0.0%
2010–2019	2.4%
2000–2009	3.9%
1990–1999	4.2%
1980–1989	6.8%
1970–1979	15.9%
1960–1969	12.2%
1950–1959	12.8%
1940–1949	14.2%
1939 or earlier	27.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	8.0%
2 bedrooms	29.2%
3 bedrooms	36.3%
4 bedrooms	18.7%
5+ bedrooms	7.7%

Vehicles per household

Vehicles	% of households
No vehicle	8.7%
1 vehicle	19.4%
2 vehicles	35.1%
3 or more	36.8%

Heating fuel

Fuel type	%
Utility gas	3.0%
Electricity	25.2%
Propane / LP gas	54.5%
Fuel oil	14.6%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	391	48.1%
Cohabiting couple	52	6.4%
Male householder, no spouse	156	19.2%
Female householder, no spouse	214	26.3%
Households with children under 18	186	22.9%
Households with seniors (65+)	352	43.3%
Average household size	2.24

Marital status

Status	Male	Female
Never married	28.6%	22.9%
Married	54.9%	48.9%
Separated	4.0%	1.4%
Widowed	1.6%	13.5%
Divorced	11.0%	13.4%

Education

Less than 9th grade 3.2%

Some HS, no diploma 6.4%

HS graduate 34.4%

Some college, no degree 18.7%

Associate's degree 16.9%

Bachelor's degree 14.1%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	90.4%
Bachelor's or higher	20.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	32	7.1%
Kindergarten	26	5.7%
Elementary school	189	41.7%
High school	119	26.3%
College / grad school	87	19.2%

Employment

Industry of employment

Agriculture & mining 20.7%

Retail trade 15.1%

Education & healthcare 14.6%

Manufacturing 11.7%

Construction 8.0%

Arts, food & hospitality 6.9%

Transportation & utilities 6.5%

Finance & real estate 5.7%

Other services 4.4%

Wholesale trade 2.4%

Professional & management 1.9%

Public administration 1.8%

Information 0.6%

Occupation

Category	%
Management, business & arts	37.0%
Service	16.5%
Sales & office	22.4%
Natural resources & construction	10.5%
Production & transportation	13.6%

Employment type

Type	%
Private sector	67.9%
Government	7.1%
Self-employed	24.4%
Unpaid family workers	0.7%

Commute

Method	%
Drive alone	74.0%
Carpool	4.9%
Public transit	0.0%
Walk	2.9%
Work from home	17.4%
Other means	0.8%
Avg commute (minutes)	16.2

Poverty

All people 20.2%

Under 18 years 24.5%

18 and over 19.3%

Married-couple families 5.6%

Female-led households 53.0%

Income support

Source	% of households
Social Security	41.0%
Retirement income	17.1%
Supplemental Security	7.6%
Cash public assistance	1.5%
Food stamps / SNAP	10.6%

Health indicators

Condition	%
Obesity	33.9%
High blood pressure	37.2%
High cholesterol	36.8%
Diabetes	11.5%
Heart disease	9.1%
Stroke	4.1%
Asthma	9.0%
Arthritis	30.1%
Kidney disease	3.8%
Pulmonary disease	7.6%
Cancer	9.4%

Behavior / access	%
Smoking	16.9%
Binge drinking	16.7%
No physical activity	24.8%
Less than 7 hrs sleep	29.3%
Depression	15.0%
Fair or poor health	13.5%
Poor mental health	10.0%
Poor physical health	10.3%
No health insurance	11.0%
Visited doctor (checkup)	76.4%
Visited dentist	67.4%
Cholesterol screening	91.1%
Teeth loss	14.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	127	8.0%

Disability	%
Any disability	15.5%
Under 18	2.8%
18–64 years	12.1%
65 and over	29.9%

Health insurance coverage

Type	%
Private insurance	66.0%
Public insurance	40.5%
No insurance	10.6%
Uninsured under 19	7.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,843	96.5%
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)	1,895	99.2%
Born in same state	1,895	99.2%
Born in different state	781	40.9%
Foreign born	0	0.0%
Naturalized citizen	15	0.8%
Not a US citizen	12	80.0%

Ancestry

Ancestry	Count	%
Polish	436	22.8%
Italian	228	11.9%
French	112	5.9%
Arab	96	5%

Ancestry	Count	%
Irish	38	2%
Dutch	30	1.6%
English	7	0.4%
German	2	0.1%

Technology access

Metric	% of households
Computer access	42.6%
Internet access	89.5%

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

Frequently asked questions about ZIP code 57638

What city is ZIP code 57638 in?

ZIP code 57638 is primarily assigned to Lemmon, South Dakota.

What county is ZIP code 57638 in?

ZIP code 57638 falls within Perkins County, South Dakota.

Does ZIP code 57638 have an older population?

29% of residents in ZIP code 57638 are 65 or older, above the national average of ~17%.

What is the poverty rate in ZIP code 57638?

20% of residents in ZIP code 57638 live below the poverty line, above the national average.

Does ZIP code 57638 have a large retiree population?

41% of households in ZIP code 57638 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 57638?

The median home value in ZIP code 57638 is $97,000.

What timezone is ZIP code 57638 in?

ZIP code 57638 observes the MST timezone.