Agar ZIP Codes — Sully County, SD

There is one unique ZIP code in Agar, South Dakota and it is 57520. Area code: 605.
1
ZIP codes
157.43
sq mi land
0.26
sq mi water
605
area code
Agar, SD ZIP code map

About Agar, SD

Agar is a charming city located in South Dakota, nestled within the serene landscape of Sully County. Known for its rural charm and community spirit, Agar offers a quiet lifestyle amidst the rolling plains of the region. With a single ZIP code of 57520, this small city exemplifies the close-knit relationships often found in smaller towns.

Location & geography

Situated in central South Dakota, Agar covers a land area of 157.43 square miles, with a small water area of 0.26 square miles adding to its geographical diversity. Neighboring cities include Onida, located about 15 miles to the east, Gettysburg approximately 28 miles to the north, and Pierre, the state capital, roughly 40 miles to the west. The terrain is characterized by expansive plains, making it ideal for agriculture and outdoor activities.

Community & economy

Agar embodies a friendly community atmosphere where residents often come together for local events and activities. The local economy is primarily driven by agriculture, alongside small businesses that serve the daily needs of its residents. Daily life in Agar is marked by the simplicity of rural living, where neighbors are friends and community support is a core value.

Transportation

Agar is accessible via South Dakota Highway 34, which connects it to other towns and cities in the region. The nearest airport with commercial service is in Pierre, which provides access to larger cities and is about 40 miles away. Public transit options are limited due to the city's size, but local roads facilitate easy travel within the area.

History

Agar was founded in the early 20th century and has maintained its agricultural roots ever since, serving as a hub for the surrounding farming community. Over the years, it has adapted to changes in industry while retaining its agricultural significance as a primary source of livelihood for its residents. Notable events in its history often revolve around community gatherings that celebrate its agricultural heritage.

Did you know?

One surprising fact about Agar is that it is one of the smaller incorporated cities in South Dakota, providing a unique glimpse into the rural lifestyle of the state. Additionally, the surrounding area is known for its hunting and fishing opportunities, attracting outdoor enthusiasts looking to explore the natural beauty of Sully County.

ZIP codes for Agar, SD (1)
ZIP code City County Map
57520 Agar Sully View map

Demographics & statistics

145
Population
62.3
Median age
$52,083
Median household income
$37,479
Per capita income
$107,000
Median home value
$775
Median monthly rent
77.5%
Home ownership
13.1%
Poverty rate
0.0%
Unemployment
117
Housing units
33.6%
Bachelor's or higher

Age distribution

Male Female
4
10–14
4
16
25–34
17
6
35–44
7
1
45–54
2
6
55–59
7
5
60–64
6
21
65–74
22
5
75–84
5
5
85+
6
← Male
Female →

Age summary

GroupCount%
Under 1885.5%
18 and over13794.5%
65 and over6444.1%
Median age62.3 years

Race & ethnicity

White 92.4%
Two or more races 7.6%
GroupCount%
White13492.4%
Two or more races117.6%

Household income

Under $10k 13.5%
$10k–$15k 4.5%
$15k–$25k 19.1%
$35k–$50k 10.1%
$50k–$75k 34.8%
$75k–$100k 7.9%
$100k–$150k 4.5%
$150k–$200k 4.5%
$200k+ 1.1%
Range% of households
Under $10k13.5%
$10k–$15k4.5%
$15k–$25k19.1%
$35k–$50k10.1%
$50k–$75k34.8%
$75k–$100k7.9%
$100k–$150k4.5%
$150k–$200k4.5%
$200k+1.1%
Median income$52,083

Housing

Home values

Under $50k 36.2%
$50k–$100k 7.2%
$100k–$150k 29.0%
$150k–$200k 8.7%
$200k–$300k 7.2%
$300k–$500k 11.6%

Housing overview

MetricValue
Median home value$107,000
Median rent / month$775
Owner occupied77.5%
Renter occupied22.5%
Vacant35.0%
Single-family detached79.6%
Large apartment buildings0.0%
Mobile homes19.0%
Median rooms5.6
Avg household size (owned)1.58

Year built

Era%
2020 or later0.0%
2010–201913.1%
2000–20092.2%
1990–19993.6%
1980–19895.8%
1970–19795.1%
1960–19692.9%
1950–19595.8%
1940–19495.8%
1939 or earlier55.5%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom6.6%
2 bedrooms12.4%
3 bedrooms73.7%
4 bedrooms4.4%
5+ bedrooms2.9%

Vehicles per household

Vehicles% of households
No vehicle2.2%
1 vehicle36.0%
2 vehicles30.3%
3 or more31.5%

Heating fuel

Fuel type%
Utility gas57.3%
Electricity33.7%
Propane / LP gas6.7%
No fuel used2.2%

Households & families

Household typeCount%
Married-couple family3438.2%
Cohabiting couple00.0%
Male householder, no spouse2528.1%
Female householder, no spouse3033.7%
Households with children under 1833.4%
Households with seniors (65+)5056.2%
Average household size1.63

Marital status

StatusMaleFemale
Never married31.7%2.7%
Married46.0%47.3%
Separated0.0%0.0%
Widowed11.1%32.4%
Divorced11.1%17.6%

Education

Less than 9th grade 0.0%
Some HS, no diploma 0.0%
HS graduate 24.1%
Some college, no degree 18.2%
Associate's degree 24.1%
Bachelor's degree 33.6%
Graduate / professional 0.0%
Metric%
HS diploma or higher100.0%
Bachelor's or higher33.6%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool00.0%
Kindergarten00.0%
Elementary school8100.0%
High school00.0%
College / grad school00.0%

Employment

Industry of employment

Agriculture & mining 26.7%
Education & healthcare 21.3%
Arts, food & hospitality 21.3%
Construction 14.7%
Retail trade 6.7%
Manufacturing 5.3%
Wholesale trade 1.3%
Finance & real estate 1.3%
Other services 1.3%

Occupation

Category%
Management, business & arts62.7%
Service4.0%
Sales & office13.3%
Natural resources & construction8.0%
Production & transportation12.0%

Employment type

Type%
Private sector88.0%
Government2.7%
Self-employed9.3%
Unpaid family workers0.0%

Commute

Method%
Drive alone93.3%
Carpool4.0%
Public transit0.0%
Walk2.7%
Other means0.0%
Avg commute (minutes)17.9

Poverty

All people 13.1%
Under 18 years 0.0%
18 and over 13.9%
Married-couple families 11.8%
Female-led households 0.0%

Income support

Source% of households
Social Security44.9%
Retirement income10.1%
Supplemental Security1.1%
Cash public assistance14.6%
Food stamps / SNAP14.6%

Health indicators

Condition%
High blood pressure36.9%
High cholesterol35.3%
Heart disease8.8%
Stroke3.9%
Asthma8.6%
Arthritis29.6%
Kidney disease3.7%
Pulmonary disease7.0%
Cancer9.8%
Behavior / access%
Binge drinking17.0%
No physical activity23.8%
Less than 7 hrs sleep26.5%
Fair or poor health12.1%
Poor mental health9.5%
Poor physical health9.6%
No health insurance10.1%
Visited doctor (checkup)78.8%
Visited dentist70.7%
Cholesterol screening91.7%
Teeth loss12.2%

Veterans & disability

VeteransCount%
Civilian veterans1410.2%
Disability%
Any disability21.4%
Under 180.0%
18–64 years16.4%
65 and over29.7%

Health insurance coverage

Type%
Private insurance73.1%
Public insurance46.2%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only145100.0%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)145100.0%
Born in same state145100.0%
Born in different state11176.6%
Foreign born00.0%
Naturalized citizen00.0%
Not a US citizen00.0%

Ancestry

AncestryCount%
French2315.9%
Dutch128.3%
AncestryCount%
Arab85.5%
Polish53.4%

Technology access

Metric% of households
Computer access61.4%
Internet access95.5%

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

Frequently asked questions
What ZIP codes does Agar, SD have?
Agar, SD has one ZIP code: 57520. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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