Plankinton ZIP Codes — Aurora County, SD

There is one unique ZIP code in Plankinton, South Dakota and it is 57368. Area code: 605.

ZIP codes

232.20

sq mi land

0.40

sq mi water

605

area code

Plankinton, SD ZIP code map

About Plankinton, SD

Plankinton, located in South Dakota, is a small yet vibrant city characterized by its tight-knit community atmosphere. As the seat of Aurora County, it offers a unique blend of rural charm and local heritage. With a rich agricultural background and modern amenities, Plankinton serves as a hub for its residents and nearby farming communities.

Location & geography

Situated in the heart of Aurora County, Plankinton spans a vast land area of 232.20 square miles, providing ample space for development and recreational activities. The city is surrounded by various rural landscapes and is approximately 20 miles southeast of Mitchell, 15 miles northeast of White Lake, and a short drive from neighboring communities such as Lake Andes and Kimball. Additionally, Plankinton has a minor water area of 0.40 square miles, which adds to the scenic beauty of the region.

Community & economy

The character of Plankinton is marked by its warm and welcoming residents who contribute to a strong sense of community. The local economy is primarily driven by agriculture, with many residents engaged in farming and related industries. Daily life in Plankinton involves various community events, local gatherings, and the enjoyment of the natural surroundings that the area offers.

Transportation

Plankinton is accessible via major highways, including U.S. Route 281, which connects it to other significant regions in South Dakota. The nearest airport is the Mitchell Municipal Airport, located approximately 20 miles to the northwest, which facilitates travel for both residents and visitors. Local transit options are limited, making personal vehicles the primary mode of transportation.

History

Plankinton was founded in the late 19th century and quickly developed as a key agricultural center in the region. Over the years, it has been known for its thriving farming community and local businesses that support the agricultural sector. Notable events in its history include the establishment of local festivals and gatherings that celebrate the city’s heritage and unity.

Did you know?

One surprising fact about Plankinton is that it serves as the home to the Aurora County Fair, which draws visitors from surrounding regions each year. Additionally, the town's historical significance is evident in its preserved buildings and local institutions that reflect South Dakota's rural traditions.

ZIP codes for Plankinton, SD (1)

ZIP code	City	County	Map
57368	Plankinton	Aurora	View map

Demographics & statistics

1,074

Population

38.7

Median age

$79,821

Median household income

$39,147

Per capita income

$129,500

Median home value

$875

Median monthly rent

74.2%

Home ownership

2.9%

Poverty rate

0.6%

Unemployment

378

Housing units

27.6%

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	290	27.0%
18 and over	784	73.0%
65 and over	124	11.5%
Median age	38.7 years

Race & ethnicity

White 88.6%

Two or more races 3.7%

Hispanic or Latino 2.7%

Black or African American 2.2%

American Indian / Alaska Native 2.2%

Asian 0.5%

Other race 0.1%

Group	Count	%
White	978	88.6%
Two or more races	41	3.7%
Hispanic or Latino	30	2.7%
Black or African American	24	2.2%
American Indian / Alaska Native	24	2.2%
Asian	6	0.5%
Other race	1	0.1%

Household income

$10k–$15k 0.7%

$15k–$25k 8.5%

$25k–$35k 4.4%

$35k–$50k 9.2%

$50k–$75k 23.4%

$75k–$100k 17.8%

$100k–$150k 25.3%

$150k–$200k 4.1%

$200k+ 6.6%

Range	% of households
$10k–$15k	0.7%
$15k–$25k	8.5%
$25k–$35k	4.4%
$35k–$50k	9.2%
$50k–$75k	23.4%
$75k–$100k	17.8%
$100k–$150k	25.3%
$150k–$200k	4.1%
$200k+	6.6%
Median income	$79,821

Housing

Home values

Under $50k 11.8%

$50k–$100k 25.9%

$100k–$150k 23.6%

$150k–$200k 6.6%

$200k–$300k 17.7%

$300k–$500k 9.2%

$500k–$1M 5.2%

Housing overview

Metric	Value
Median home value	$129,500
Median rent / month	$875
Owner occupied	74.2%
Renter occupied	25.8%
Vacant	15.1%
Single-family detached	83.5%
Large apartment buildings	0.0%
Mobile homes	9.1%
Median rooms	6.5
Avg household size (owned)	2.55

Year built

Era	%
2020 or later	0.0%
2010–2019	11.4%
2000–2009	20.5%
1990–1999	6.6%
1980–1989	6.8%
1970–1979	12.4%
1960–1969	4.8%
1950–1959	4.8%
1940–1949	0.0%
1939 or earlier	32.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.2%
2 bedrooms	19.8%
3 bedrooms	41.1%
4 bedrooms	21.9%
5+ bedrooms	12.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.5%
1 vehicle	22.9%
2 vehicles	41.6%
3 or more	35.0%

Heating fuel

Fuel type	%
Utility gas	3.4%
Electricity	56.4%
Propane / LP gas	30.2%
Fuel oil	4.4%
Wood	1.5%
No fuel used	1.5%

Households & families

Household type	Count	%
Married-couple family	231	56.2%
Cohabiting couple	43	10.5%
Male householder, no spouse	54	13.1%
Female householder, no spouse	83	20.2%
Households with children under 18	143	34.8%
Households with seniors (65+)	98	23.8%
Average household size	2.46

Marital status

Status	Male	Female
Never married	35.0%	21.9%
Married	56.5%	56.5%
Separated	0.7%	2.3%
Widowed	0.2%	7.1%
Divorced	7.5%	12.2%

Education

Less than 9th grade 4.3%

Some HS, no diploma 2.6%

HS graduate 27.8%

Some college, no degree 18.1%

Associate's degree 19.5%

Bachelor's degree 20.6%

Graduate / professional 7.1%

Metric	%
HS diploma or higher	93.1%
Bachelor's or higher	27.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	20	6.8%
Kindergarten	8	2.7%
Elementary school	141	47.8%
High school	78	26.4%
College / grad school	48	16.3%

Employment

Industry of employment

Education & healthcare 25.7%

Retail trade 14.4%

Agriculture & mining 13.6%

Manufacturing 12.9%

Transportation & utilities 7.3%

Professional & management 5.7%

Construction 5.1%

Other services 3.9%

Finance & real estate 3.1%

Public administration 2.6%

Arts, food & hospitality 2.3%

Information 1.7%

Wholesale trade 1.6%

Occupation

Category	%
Management, business & arts	33.3%
Service	14.1%
Sales & office	16.7%
Natural resources & construction	15.5%
Production & transportation	20.3%

Employment type

Type	%
Private sector	76.7%
Government	15.2%
Self-employed	8.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.5%
Carpool	7.8%
Public transit	0.0%
Walk	5.9%
Other means	0.3%
Avg commute (minutes)	18.2

Poverty

All people 2.9%

Under 18 years 2.9%

18 and over 2.9%

Married-couple families 0.9%

Female-led households 3.1%

Income support

Source	% of households
Social Security	18.2%
Retirement income	21.7%
Supplemental Security	2.7%
Cash public assistance	0.2%
Food stamps / SNAP	4.4%

Health indicators

Condition	%
High blood pressure	30.1%
High cholesterol	30.9%
Heart disease	6.5%
Stroke	2.9%
Asthma	8.5%
Arthritis	23.2%
Kidney disease	2.8%
Pulmonary disease	5.6%
Cancer	7.3%

Behavior / access	%
Binge drinking	19.8%
No physical activity	22.1%
Less than 7 hrs sleep	29.1%
Fair or poor health	10.7%
Poor mental health	10.4%
Poor physical health	8.3%
No health insurance	13.4%
Visited doctor (checkup)	74.3%
Visited dentist	66.3%
Cholesterol screening	89.1%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	39	5.0%

Disability	%
Any disability	10.5%
Under 18	4.1%
18–64 years	9.7%
65 and over	27.4%

Health insurance coverage

Type	%
Private insurance	80.3%
Public insurance	22.4%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,015	94.5%
Spanish	72	7.1%
Other Indo-European	72	7.1%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	987	91.9%
Born in same state	974	90.7%
Born in different state	796	74.1%
Foreign born	13	1.2%
Naturalized citizen	87	8.1%
Not a US citizen	16	18.4%

Ancestry

Ancestry	Count	%
Polish	124	11.5%
French	98	9.1%
English	90	8.4%
Italian	74	6.9%

Ancestry	Count	%
Arab	57	5.3%
Dutch	7	0.7%
German	2	0.2%

Technology access

Metric	% of households
Computer access	38.3%
Internet access	96.4%

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

Frequently asked questions

What ZIP codes does Plankinton, SD have?

Plankinton, SD has one ZIP code: 57368. Each ZIP code serves a distinct delivery area within the city and surrounding region.