57279 ZIP Code — Wilmot, SD

Roberts County, South Dakota

ZIP code 57279 is located in Wilmot, South Dakota, within Roberts County. It covers approximately 139.88 square miles and serves a population of 933 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

About ZIP code 57279

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 $147,200. Owner-occupancy is high at 87%, well above the national average.

Median household income is $69,375. The poverty rate of 6% is below the national average. 44% 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 23 minutes is near the national average.

Educational attainment is near the national average, with 25% of residents holding a bachelor's degree or higher.

Overall, ZIP code 57279 reflects a community defined by high homeownership and a significant Social Security-dependent population.

933

population

139.88

sq mi land

Standard

ZIP type

Central (CT)

timezone

57279 ZIP code map

Cities in ZIP code 57279

Below are the cities the US Postal Service accepts for ZIP code 57279. Using any city not on this list may result in mail delivery delays.

City	Status
Wilmot	Acceptable
Wilmot	Preferred

Nearby ZIP codes

57257 Peever (9.2 mi) 57227 Corona (9.5 mi) 57251 Marvin (10.4 mi) 57269 Twin Brooks (12.7 mi) 56278 Ortonville (13.7 mi) 57266 Summit (13.9 mi) 56211 Beardsley (15 mi) 57252 Milbank (18.5 mi) 56219 Browns Valley (18.5 mi) 57216 Big Stone City (18.8 mi) 57262 Sisseton (19.6 mi)

Demographics updated 05/2026

Population
Total population	933
Population density	7 / sq mi
State FIPS	46
County FIPS	109

Geography
Land area	139.88 sq mi
Water area	3.32 sq mi
Latitude	45.4130
Longitude	-96.8396
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	46.5%	50.2%	41.7%
$50k – $100k	30.7%	32.4%	33.8%
$100k – $200k	22.2%	14.7%	20.1%
Over $200k	0.6%	2.7%	4.4%

Demographics & statistics

933

Population

People per sq mi

54.2

Median age

$69,375

Median household income

$38,067

Per capita income

$147,200

Median home value

$641

Median monthly rent

86.9%

Home ownership

6.2%

Poverty rate

1.0%

Unemployment

569

Housing units

25.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	173	18.5%
18 and over	760	81.5%
65 and over	277	29.7%
Median age	54.2 years

Race & ethnicity

White 88.9%

American Indian / Alaska Native 5.5%

Two or more races 3%

Hispanic or Latino 1.4%

Other race 1.3%

Group	Count	%
White	841	88.9%
American Indian / Alaska Native	52	5.5%
Two or more races	28	3%
Hispanic or Latino	13	1.4%
Other race	12	1.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	46.5%	50.2%	41.7%
$50k – $100k	30.7%	32.4%	33.8%
$100k – $200k	22.2%	14.7%	20.1%
Over $200k	0.6%	2.7%	4.4%

Under $10k 1.6%

$10k–$15k 6.6%

$15k–$25k 7.7%

$25k–$35k 9.2%

$35k–$50k 8.9%

$50k–$75k 24.6%

$75k–$100k 9.2%

$100k–$150k 27.2%

$150k–$200k 3.3%

$200k+ 1.6%

Range	% of households
Under $10k	1.6%
$10k–$15k	6.6%
$15k–$25k	7.7%
$25k–$35k	9.2%
$35k–$50k	8.9%
$50k–$75k	24.6%
$75k–$100k	9.2%
$100k–$150k	27.2%
$150k–$200k	3.3%
$200k+	1.6%
Median income	$69,375

Housing

Home values

Under $50k 21.6%

$50k–$100k 18.4%

$100k–$150k 10.5%

$150k–$200k 12.2%

$200k–$300k 11.9%

$300k–$500k 18.6%

$500k–$1M 3.2%

$1M+ 3.5%

Housing overview

Metric	Value
Median home value	$147,200
Median rent / month	$641
Owner occupied	86.9%
Renter occupied	13.1%
Vacant	31.8%
Single-family detached	79.2%
Large apartment buildings	0.0%
Mobile homes	16.5%
Median rooms	5.8
Avg household size (owned)	2.08

Year built

Era	%
2020 or later	0.6%
2010–2019	8.5%
2000–2009	6.1%
1990–1999	11.2%
1980–1989	6.7%
1970–1979	12.8%
1960–1969	12.2%
1950–1959	13.1%
1940–1949	2.9%
1939 or earlier	25.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	9.6%
2 bedrooms	26.1%
3 bedrooms	44.5%
4 bedrooms	13.0%
5+ bedrooms	6.1%

Vehicles per household

Vehicles	% of households
No vehicle	1.9%
1 vehicle	21.4%
2 vehicles	40.6%
3 or more	36.2%

Heating fuel

Fuel type	%
Utility gas	1.4%
Electricity	39.9%
Propane / LP gas	39.4%
Fuel oil	6.6%
Wood	6.6%
No fuel used	1.4%

Households & families

Household type	Count	%
Married-couple family	224	52.6%
Cohabiting couple	19	4.5%
Male householder, no spouse	95	22.3%
Female householder, no spouse	88	20.7%
Households with children under 18	82	19.2%
Households with seniors (65+)	160	37.6%
Average household size	2.11

Marital status

Status	Male	Female
Never married	24.2%	11.8%
Married	60.3%	58.6%
Separated	0.0%	3.1%
Widowed	3.2%	16.3%
Divorced	12.3%	10.1%

Education

Less than 9th grade 0.7%

Some HS, no diploma 4.8%

HS graduate 34.9%

Some college, no degree 21.1%

Associate's degree 13.2%

Bachelor's degree 20.4%

Graduate / professional 4.9%

Metric	%
HS diploma or higher	94.5%
Bachelor's or higher	25.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	10	6.5%
Kindergarten	16	10.5%
Elementary school	82	53.6%
High school	43	28.1%
College / grad school	2	1.3%

Employment

Industry of employment

Education & healthcare 22.7%

Retail trade 19.1%

Manufacturing 14.3%

Agriculture & mining 11.8%

Wholesale trade 6.3%

Construction 5.3%

Transportation & utilities 4.8%

Finance & real estate 3.6%

Professional & management 3.4%

Other services 3.4%

Arts, food & hospitality 2.7%

Public administration 2.7%

Occupation

Category	%
Management, business & arts	35.5%
Service	11.1%
Sales & office	21.5%
Natural resources & construction	19.8%
Production & transportation	12.1%

Employment type

Type	%
Private sector	72.9%
Government	12.8%
Self-employed	14.0%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	78.5%
Carpool	8.3%
Public transit	0.0%
Walk	2.7%
Work from home	10.0%
Other means	0.5%
Avg commute (minutes)	22.6

Poverty

All people 6.2%

Under 18 years 2.9%

18 and over 7.0%

Married-couple families 4.9%

Female-led households 0.0%

Income support

Source	% of households
Social Security	43.7%
Retirement income	20.7%
Supplemental Security	5.6%
Cash public assistance	2.6%
Food stamps / SNAP	3.1%

Health indicators

Condition	%
Obesity	35.2%
High blood pressure	37.3%
High cholesterol	35.3%
Diabetes	11.5%
Heart disease	9.2%
Stroke	4.1%
Asthma	8.7%
Arthritis	28.5%
Kidney disease	3.8%
Pulmonary disease	7.6%
Cancer	9.2%

Behavior / access	%
Smoking	17.7%
Binge drinking	17.7%
No physical activity	26.3%
Less than 7 hrs sleep	27.4%
Depression	14.4%
Fair or poor health	13.5%
Poor mental health	10.0%
Poor physical health	10.3%
No health insurance	11.9%
Visited doctor (checkup)	77.9%
Visited dentist	69.7%
Cholesterol screening	91.1%
Teeth loss	15.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	69	9.1%

Disability	%
Any disability	12.0%
Under 18	2.9%
18–64 years	6.8%
65 and over	29.0%

Health insurance coverage

Type	%
Private insurance	71.0%
Public insurance	34.6%
No insurance	9.5%
Uninsured under 19	9.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	901	96.6%
Spanish	2	0.2%
Other Indo-European	0	0.0%
Asian & Pacific Islander	2	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	924	99.0%
Born in same state	924	99.0%
Born in different state	579	62.1%
Foreign born	0	0.0%
Naturalized citizen	9	1.0%
Not a US citizen	6	66.7%

Ancestry

Ancestry	Count	%
Polish	224	24%
French	102	10.9%
Dutch	61	6.5%

Ancestry	Count	%
English	56	6%
Italian	54	5.8%
Arab	48	5.1%

Technology access

Metric	% of households
Computer access	45.7%
Internet access	84.0%

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

Frequently asked questions about ZIP code 57279

What city is ZIP code 57279 in?

ZIP code 57279 is primarily assigned to Wilmot, South Dakota.

What county is ZIP code 57279 in?

ZIP code 57279 falls within Roberts County, South Dakota.

Does ZIP code 57279 have an older population?

30% of residents in ZIP code 57279 are 65 or older, above the national average of ~17%.

Is ZIP code 57279 mostly owner-occupied?

87% of occupied units in ZIP code 57279 are owner-occupied, well above the national average.

Does ZIP code 57279 have a large retiree population?

44% of households in ZIP code 57279 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 57279?

The median home value in ZIP code 57279 is $147,200.

What timezone is ZIP code 57279 in?

ZIP code 57279 observes the CST timezone.