Zip code 57231: De Smet, South Dakota

Q: What city is zip code 57231?

57231 is assigned to De Smet, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 57231 in?

57231 is in Kingsbury County, South Dakota.

Q: What is the population of 57231?

About 1,724 people live in 57231, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 57231?

The median household income in 57231 is $78,646.

Q: What zip codes are near 57231?

The closest zip codes to 57231 are 57249, 57353, 57233, 57051, 57323.

Residential delivery areaKingsbury CountyCentral Time

Population

1,724

Median household income

$79K

U.S. $81K

Median home value

$212K

U.S. $333K

Median rent

$725/mo

U.S. $1,413

Median age

44.2

U.S. 38.9

Land area

249 sq mi

7 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 57231

57231 is a rural zip code in De Smet, South Dakota (Kingsbury County), covering 249 sq mi of land. About 1,724 people live here, or 7 per square mile. The median resident is 44.2 years old, compared with 38.9 nationally.

The median household earns $78,646 a year, close to the national median of $80,734. 8.8% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $212,200, or 2.7 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 87% of occupied homes are lived in by their owners, and renters pay a median of $725 a month.

25% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 13.5 minutes each way, and 8% of workers work from home. The most common jobs among working residents are in management; office and administrative support; and healthcare. 20% of them are self-employed (U.S.: 10%).

How 57231 compares

Sorted from highest to lowest national percentile

Self-employed workers19.5%
97th
U.S. 10% · SD 12.1%154th of 347 in SD
Residents 65 and older26.3%
94th
U.S. 17.2% · SD 18%89th of 347 in SD
Homeownership rate86.7%
92nd
StrengthU.S. 65.2% · SD 68.6%98th of 344 in SD
Housing vacancy17.8%
91st
U.S. 10.1% · SD 10.5%147th of 344 in SD
Healthcare workers13.5%
90th
U.S. 9.7% · SD 10.5%54th of 347 in SD
Median age44.2
82nd
U.S. 38.9 · SD 38132nd of 347 in SD
Residents under 1825.3%
77th
U.S. 22% · SD 24.2%151st of 347 in SD
Veterans6.9%
65th
U.S. 6.2% · SD 7.9%169th of 347 in SD
Per capita income$41,058
53rd
U.S. $44,673 · SD $40,550133rd of 347 in SD
Median household income$78,646
48th
U.S. $80,734 · SD $75,081132nd of 327 in SD
Median earnings per worker$46,818
46th
U.S. $49,666 · SD $46,539148th of 345 in SD
Poverty rate8.8%
37th
U.S. 12.5% · SD 11.9%175th of 344 in SD
Bachelor's degree or higher24.8%
33rd
U.S. 35.7% · SD 31.9%174th of 346 in SD
Broadband access89.6%
31st
U.S. 91% · SD 89.6%139th of 344 in SD
Median home value$212,200
24th
U.S. $332,700 · SD $257,400112th of 302 in SD
Work from home8.3%
24th
U.S. 15.1% · SD 9.7%208th of 347 in SD
Income inequality (Gini)0.394
17th
StrengthU.S. 0.483 · SD 0.449205th of 343 in SD
Uninsured rate2.6%
9th
StrengthU.S. 8.4% · SD 9%296th of 347 in SD
Government workers7.7%
6th
U.S. 14.5% · SD 15.8%291st of 347 in SD
Median gross rent$725
4th
U.S. $1,413 · SD $946148th of 243 in SD
Tech workers0.2%
4th
U.S. 3.8% · SD 2.3%176th of 347 in SD
Population1,724
3rd
U.S. 334,922,499 · SD 907,42882nd of 347 in SD
Diversity index7.7
3rd
U.S. 61.4 · SD 35.4270th of 347 in SD
Rent-burdened renters25.4%
3rd
StrengthU.S. 51.1% · SD 39.8%185th of 313 in SD
Foreign-born residents0.3%
2nd
U.S. 14.1% · SD 4%213th of 347 in SD
Population density7/sq mi
1st
U.S. 95/sq mi · SD 12/sq mi143rd of 347 in SD
Average commute13.5 min
1st
StrengthU.S. 26.4 min · SD 17.8 min284th of 330 in SD
Unemployment rate0%
1st
StrengthU.S. 5.2% · SD 2.9%298th of 347 in SD

Measure	57231	Kingsbury	SD	U.S.	National percentile	Rank in SD
Self-employed workers	19.5%	18%	12.1%	10%	97th	154th of 347
Residents 65 and older	26.3%	23.1%	18%	17.2%	94th	89th of 347
Homeownership rateStrength	86.7%	82.1%	68.6%	65.2%	92nd	98th of 344
Housing vacancy	17.8%	20.7%	10.5%	10.1%	91st	147th of 344
Healthcare workers	13.5%	10.5%	10.5%	9.7%	90th	54th of 347
Median age	44.2	42.1	38	38.9	82nd	132nd of 347
Residents under 18	25.3%	25.1%	24.2%	22%	77th	151st of 347
Veterans	6.9%	6.7%	7.9%	6.2%	65th	169th of 347
Per capita income	$41,058	$37,027	$40,550	$44,673	53rd	133rd of 347
Median household income	$78,646	$74,000	$75,081	$80,734	48th	132nd of 327
Median earnings per worker	$46,818	$45,602	$46,539	$49,666	46th	148th of 345
Poverty rate	8.8%	10.6%	11.9%	12.5%	37th	175th of 344
Bachelor's degree or higher	24.8%	23.1%	31.9%	35.7%	33rd	174th of 346
Broadband access	89.6%	89.8%	89.6%	91%	31st	139th of 344
Median home value	$212,200	$169,500	$257,400	$332,700	24th	112th of 302
Work from home	8.3%	8.5%	9.7%	15.1%	24th	208th of 347
Income inequality (Gini)Strength	0.394	0.397	0.449	0.483	17th	205th of 343
Uninsured rateStrength	2.6%	5.3%	9%	8.4%	9th	296th of 347
Government workers	7.7%	12.1%	15.8%	14.5%	6th	291st of 347
Median gross rent	$725	$685	$946	$1,413	4th	148th of 243
Tech workers	0.2%	0.7%	2.3%	3.8%	4th	176th of 347
Population	1,724	5,244	907,428	334,922,499	3rd	82nd of 347
Diversity index	7.7	16.4	35.4	61.4	3rd	270th of 347
Rent-burdened rentersStrength	25.4%	47.9%	39.8%	51.1%	3rd	185th of 313
Foreign-born residents	0.3%	1%	4%	14.1%	2nd	213th of 347
Population density	7/sq mi	6/sq mi	12/sq mi	95/sq mi	1st	143rd of 347
Average commuteStrength	13.5 min	20.8 min	17.8 min	26.4 min	1st	284th of 330
Unemployment rateStrength	0%	1%	2.9%	5.2%	1st	298th of 347

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

16%

5–17

18–24

10%

25–34

12%

35–44

45–54

15%

55–64

16%

65–74

10%

75+

Median age

44.2

Under 18

25.3%

65 and over

26.3%

Race and ethnicity

White96%
Black0%
Hispanic0.1%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial4%

Diversity index

7.7

U.S. 61.4

Foreign-born

0.3%

U.S. 14.1%

Born in state

83.9%

Language spoken at home (households)

English only

98%

Spanish

0.3%

Other Indo-European

Asian / Pacific

Other

Households

Households: 721
Average household size: 2.3
Family households: 61.9%
Married couples: 56.2%
Living alone: 33.1%
Veterans (of adults): 6.9%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

12%

$25–50k

15%

$50–75k

21%

$75–100k

14%

$100–150k

22%

$150–200k

$200k+

Median household income

57231

$78,646

Kingsbury Co.

$74,000

South Dakota

$75,081

United States

$80,734

Per capita income

$41,058

U.S. $44,673

Poverty rate

8.8%

U.S. 12.5%

Households earning $150K+

15.8%

U.S. 23%

Income inequality (Gini)

0.394

U.S. 0.483

Housing

Median home value

57231

$212,200

Kingsbury Co.

$169,500

South Dakota

$257,400

United States

$332,700

Median gross rent

57231

$725

Kingsbury Co.

$685

South Dakota

$946

United States

$1,413

Types of housing

Single-family

82%

2–4 units

5–19 units

20+ units

Mobile home

10%

Boat, RV, van

Housing units: 877
Owner-occupied: 86.7%
Vacant: 17.8%
Median year built: 1967
Median rooms: 6.5
Renters paying 30%+ of income: 25.4%
Renters paying 50%+ of income: 6.3%
Home value to income: 2.7× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

82%

Carpooled

Transit

Walked

Bicycle

0.2%

Worked from home

Other

Commute time (one way)

<10 min

63%

10–19

17%

20–29

30–44

45–59

60+

Average commute

13.5 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

66.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

15%

Office and admin

15%

Healthcare

14%

Sales

Construction and repair

Production

Food service

Cleaning and personal care

Farming, fishing and forestry

Transportation and moving

Education

Business and finance

Engineering and science

Legal and social services

Arts, media and sports

Police and fire

0.5%

Computer and math

0.2%

Industries

Health care and social assistance

17%

Agriculture and mining

13%

Manufacturing

13%

Retail

11%

Wholesale

Finance, insurance and real estate

Education

Construction

Transportation, warehousing and utilities

Other services

Public administration

Restaurants and hotels

Professional and technical services

Information

Admin, support and management

Arts and recreation

0.1%

Median earnings per worker

$46,818

U.S. $49,666

Self-employed

19.5%

U.S. 10%

Government workers

7.7%

U.S. 14.5%

Nonprofit workers

14.4%

U.S. 8.8%

Median earnings by type of work

Type of work	57231	U.S.
Management, business, science and arts	$58,125	$74,888
Service	$22,292	$26,804
Sales and office	$42,344	$40,476
Construction and maintenance	$60,592	$49,199
Production and transportation	$49,107	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

43%

Some college

13%

Associate's

13%

Bachelor's

18%

Graduate

High school graduate or higher: 94.2%
Bachelor's degree or higher: 24.8%
Graduate or professional degree: 7.2%
Households with broadband: 89.6%
Cable, fiber or DSL: 74.5%
No internet access: 8.9%
Without health insurance: 2.6%
Limited-English households: 0%

Geography

City (USPS): De Smet
State: South Dakota
County: Kingsbury County
Center point: 44.3758° N, 97.5823° W
Land area: 249 sq mi
Water area: 13 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Zip codes near 57231

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
57249	Lake Preston, SD	11 mi	1,023	$63,182	$193,300
57353	Iroquois, SD	13 mi	812	$75,625	$139,300
57233	Erwin, SD	13 mi	350	$82,917	—
57051	Oldham, SD	16 mi	163	$56,250	$112,500
57323	Carthage, SD	16 mi	126	$51,250	$70,000
57221	Bryant, SD	18 mi	1,158	$73,988	$227,100
57278	Willow Lake, SD	20 mi	1,011	$70,208	$220,400
57214	Badger, SD	20 mi	162	$65,000	$70,000
57212	Arlington, SD	22 mi	1,819	$93,750	$238,100
57386	Yale, SD	22 mi	240	$76,250	$158,700
57324	Cavour, SD	24 mi	410	$67,019	$251,100
57349	Howard, SD	24 mi	1,513	$75,179	$153,000

Zip codes like 57231 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 57231

What city is zip code 57231?

57231 is assigned to De Smet, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 57231 in?

57231 is in Kingsbury County, South Dakota.

What is the population of 57231?

About 1,724 people live in 57231, according to the Census Bureau's American Community Survey.

What time zone is 57231 in?

57231 is in Central Time.

What is the median household income in 57231?

The median household income in 57231 is $78,646.

What zip codes are near 57231?

The closest zip codes to 57231 are 57249, 57353, 57233, 57051, 57323.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 57231, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.