Andover ZIP Codes — Day County, SD

There is one unique ZIP code in Andover, South Dakota and it is 57422. Area code: 605.

ZIP codes

111.86

sq mi land

0.53

sq mi water

605

area code

Andover, SD ZIP code map

About Andover, SD

Andover is a small city located in Day County, South Dakota. With its close-knit community and serene surroundings, Andover offers a peaceful lifestyle amid beautiful natural landscapes. The city is characterized by its rural charm and friendly atmosphere, making it an attractive place for both residents and visitors alike.

Location & geography

Andover is situated in the northeastern part of South Dakota, approximately 20 miles southwest of the city of Sisseton and around 25 miles north of Webster. The city covers a total land area of 111.86 square miles, with a minor water area of 0.53 square miles, primarily consisting of rolling hills and open fields. This rural setting provides ample opportunities for outdoor activities and scenic views.

Community & economy

The character of Andover is defined by its strong community spirit and agricultural roots. The local economy is influenced by farming and small businesses, which contribute to daily life in the area. Residents enjoy a peaceful lifestyle, often participating in community events and building connections through various local gatherings.

Transportation

Andover can be accessed via South Dakota Highway 10, which connects the city to surrounding areas. The nearest named airport is Sisseton Municipal Airport, located about 20 miles away, providing essential air travel services for the region. There is limited public transportation, so personal vehicles are necessary for getting around.

History

Andover was founded in the late 19th century, with developments closely tied to the agricultural boom in the region. The city has historically relied on farming as a key industry, contributing to its growth and community development. Over the years, Andover has retained its small-town charm while adapting to modern needs and lifestyles.

Did you know?

One surprising fact about Andover is that it has only one ZIP code, 57422, which uniquely identifies the entire city. Additionally, its land area makes it one of the more spacious municipalities in Day County, providing residents with plenty of room for recreational activities and agriculture.

ZIP codes for Andover, SD (1)

ZIP code	City	County	Map
57422	Andover	Day	View map

Demographics & statistics

157

Population

43.5

Median age

$52,000

Median household income

$30,670

Per capita income

$95,000

Median home value

Median monthly rent

85.0%

Home ownership

2.5%

Poverty rate

0.0%

Unemployment

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	30	19.1%
18 and over	127	80.9%
65 and over	25	15.9%
Median age	43.5 years

Race & ethnicity

White 92.6%

Hispanic or Latino 3.7%

Other race 3.7%

Group	Count	%
White	151	92.6%
Hispanic or Latino	6	3.7%
Other race	6	3.7%

Household income

Under $10k 1.3%

$10k–$15k 3.8%

$15k–$25k 8.8%

$25k–$35k 18.8%

$35k–$50k 12.5%

$50k–$75k 18.8%

$75k–$100k 10.0%

$100k–$150k 23.8%

$150k–$200k 2.5%

Range	% of households
Under $10k	1.3%
$10k–$15k	3.8%
$15k–$25k	8.8%
$25k–$35k	18.8%
$35k–$50k	12.5%
$50k–$75k	18.8%
$75k–$100k	10.0%
$100k–$150k	23.8%
$150k–$200k	2.5%
Median income	$52,000

Housing

Home values

Under $50k 26.5%

$50k–$100k 25.0%

$100k–$150k 19.1%

$150k–$200k 13.2%

$200k–$300k 7.4%

$300k–$500k 5.9%

$1M+ 2.9%

Housing overview

Metric	Value
Median home value	$95,000
Median rent / month	$0
Owner occupied	85.0%
Renter occupied	15.0%
Vacant	18.4%
Single-family detached	82.7%
Large apartment buildings	0.0%
Mobile homes	17.3%
Median rooms	6.2
Avg household size (owned)	2.04

Year built

Era	%
2020 or later	0.0%
2010–2019	6.1%
2000–2009	7.1%
1990–1999	12.2%
1980–1989	0.0%
1970–1979	5.1%
1960–1969	7.1%
1950–1959	4.1%
1940–1949	3.1%
1939 or earlier	55.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	10.2%
2 bedrooms	18.4%
3 bedrooms	31.6%
4 bedrooms	21.4%
5+ bedrooms	18.4%

Vehicles per household

Vehicles	% of households
No vehicle	7.5%
1 vehicle	16.3%
2 vehicles	45.0%
3 or more	31.3%

Heating fuel

Fuel type	%
Utility gas	7.5%
Electricity	13.8%
Propane / LP gas	70.0%

Households & families

Household type	Count	%
Married-couple family	34	42.5%
Cohabiting couple	4	5.0%
Male householder, no spouse	21	26.3%
Female householder, no spouse	21	26.3%
Households with children under 18	11	13.8%
Households with seniors (65+)	25	31.3%
Average household size	1.96

Marital status

Status	Male	Female
Never married	20.6%	18.8%
Married	47.6%	53.1%
Separated	9.5%	0.0%
Widowed	0.0%	7.8%
Divorced	22.2%	20.3%

Education

Less than 9th grade 0.0%

Some HS, no diploma 10.5%

HS graduate 36.2%

Some college, no degree 11.4%

Associate's degree 14.3%

Bachelor's degree 26.7%

Graduate / professional 1.0%

Metric	%
HS diploma or higher	89.5%
Bachelor's or higher	27.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	4	16.7%
Kindergarten	0	0.0%
Elementary school	12	50.0%
High school	6	25.0%
College / grad school	2	8.3%

Employment

Industry of employment

Agriculture & mining 43.8%

Education & healthcare 22.5%

Manufacturing 12.5%

Transportation & utilities 7.5%

Other services 6.3%

Finance & real estate 3.8%

Retail trade 2.5%

Construction 1.3%

Occupation

Category	%
Management, business & arts	41.3%
Service	10.0%
Sales & office	21.3%
Natural resources & construction	20.0%
Production & transportation	7.5%

Employment type

Type	%
Private sector	52.5%
Government	10.0%
Self-employed	37.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	52.5%
Carpool	7.5%
Public transit	0.0%
Walk	21.3%
Other means	0.0%
Avg commute (minutes)	15.5

Poverty

All people 2.5%

Under 18 years 0.0%

18 and over 3.1%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	30.0%
Retirement income	6.3%
Supplemental Security	1.3%
Cash public assistance	3.8%
Food stamps / SNAP	3.8%

Health indicators

Condition	%
High blood pressure	35.7%
High cholesterol	33.7%
Heart disease	8.4%
Stroke	3.7%
Asthma	8.6%
Arthritis	27.3%
Kidney disease	3.4%
Pulmonary disease	7.1%
Cancer	8.0%

Behavior / access	%
Binge drinking	17.3%
No physical activity	26.4%
Less than 7 hrs sleep	28.9%
Fair or poor health	13.2%
Poor mental health	10.1%
Poor physical health	10.1%
No health insurance	13.1%
Visited doctor (checkup)	75.7%
Visited dentist	63.8%
Cholesterol screening	90.4%
Teeth loss	15.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	7	5.5%

Disability	%
Any disability	14.6%
Under 18	0.0%
18–64 years	19.6%
65 and over	12.0%

Health insurance coverage

Type	%
Private insurance	89.2%
Public insurance	21.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	139	88.5%
Spanish	6	4.3%
Other Indo-European	6	4.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	151	96.2%
Born in same state	149	94.9%
Born in different state	130	82.8%
Foreign born	2	1.3%
Naturalized citizen	6	3.8%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Polish	29	18.5%
German	15	9.6%
Arab	8	5.1%

Ancestry	Count	%
Italian	7	4.5%
French	7	4.5%

Technology access

Metric	% of households
Computer access	51.0%
Internet access	96.3%

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

Frequently asked questions

What ZIP codes does Andover, SD have?

Andover, SD has one ZIP code: 57422. Each ZIP code serves a distinct delivery area within the city and surrounding region.