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South Dakota›Sully County
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AgarSD

A town of 71, settled in 1910.

Population
71
2025 Census estimate · +6% since 2020
Median home value
$114K
Census ACS
Median age
54.1
years
Land area
0 sq mi

Is Agar a good place to live?

Agar has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

71 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Onida · 9 miGettysburg · 13 miLebanon · 22 miBlunt · 23 mi
SDMap-doton-Agar
SDMap-doton-Agar, 2004
Agar’s story

116 years in pictures

Census counts: 200 in 1930, 68 in 2020. The archive holds 1 old photo or paper going back to 2004 and 2 maps from 1965 on.

  • 1910Agar is settled
Explore the history →
Getting set up

Moving to Agar: who provides what

Who provides power, water and the rest in Agar, and how to reach them.

The full setup list →
PowerOahe Electric Coop10.5¢/kWh · EIA 2025HIFLD · EIA
WaterMid-Dakota Rural WaterNo health-based violations in 5 years · EPAEPA
Internet1 providers100% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Agar’s trash rules yet
SchoolsAgar-Blunt-Onida School District 58-3Which school depends on your addressNCES
Register to voteIn personSouth Dakota has no online registration; you can register in person until 15 days before Election Day or by mail (received 15 days before).vote.gov
Who runs elections hereSully County AuditorSully County; contacts on the Handbook page.FVAP, Jul 2023
ZIP code5752057520 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.

The data

Ordered by what stands out in Agar.

Climate

The climate in Agar brings snowy winters and pleasant summers

July afternoons reach 86°, January nights drop to 6° and about 49 inches of snow falls in a winter.

49″snow a winter

Typical low → high °F

Winter9–29°
Spring32–56°
Summer57–83°
Fall34–59°
Oct 2
typical first frost
May 8
typical last frost
+1.0°
vs. the 20th-century average
Full pageAgar’s climate pageOpen the page
A year of weatherJuly highs 86°, January lows 6°Rain & snow49″ of snow a winter · 19 inches of rain and snow a yearHeating & coolingMostly a heating billThen and now+1.0° vs. the 20th century · Warmer than the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Natural hazards

Agar has a high natural-hazard risk, chiefly from inland flooding

In Agar, the risk rating from FEMA is 67 of 100. 50% of the town’s expected losses from natural hazards come from inland flooding, followed by cold waves at 29%.

67risk score of 100
FEMA risk score
67High riskLowerHigher
Inland floodingCold wavesWildfire
Full pageAgar’s hazards pageOpen the page
What it facesHigh riskFlood claims0 paid flood claims · No paid flood claims on recordPast disasters14 disaster declarations · Declared for the countyGet ready0.5 events a year, on average · Ready for inland flooding

FEMA National Risk Index · OpenFEMA

Health

Compared with most of South Dakota and the rest of the country, fewer of Agar’s adults sleep under 7 hours

Agar: 6.5% of adults 18 to 64 have no health insurance. 16% of adults binge drink in the town, where South Dakota’s towns sit at 19% and U.S. towns at 16%. Against the South Dakota average, Agar comes out ahead on 4 CDC measures out of 26, and behind on 4. Among 36 South Dakota towns, just 2 have a higher share of adults who have high blood pressure than Agar.

AgarSouth Dakota townsU.S. towns
Sleep under 7 hours (CDC PLACES)27%30%36%
Frequent mental distress (CDC PLACES)14%15%17%
High blood pressure (CDC PLACES)39%31%35%
Depression (CDC PLACES)19%22%23%
26 measures vs. South Dakota
4 better18 too close to call4 worse
What stands outAgarSD
More adults screened for colon cancer75.3%65.5%
More adults seeing a dentist75.8%69.2%
More adults who have had cancer12.6%9.2%
Avera Missouri River Health Center
20.7 mi away · emergency room
2 of 3
care shortages: primary care, mental health
Full pageAgar’s health reportOpen the page
Everyday habitsFewer binge drinkersHospitals & doctors nearby20.7 miles to an ER · Avera Missouri River Health CenterHow adults are doingFewer adults in frequent mental distressEvery CDC estimateBetter than SD on 4 of 26

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

Keep exploring

Everything we know about Agar

13pages on Agar
The big questions
HealthBetter than SD on 4 of 26 CDC measuresCost of livingNatural hazardsFEMA risk higher than 67% of U.S. communities · inland flooding
Out and about
PlacesLibrarySully Area Library
The story
HistorySettled 1910Town Hall & politicsClimate86° summer highs · 49″ of snow
Day to day
NewsWeatherHandbookZIP code 57520Town SquareNeighbors
After high school

Colleges nearby

None within 15 miles of Agar; the nearest are

Northern State UniversityUniversity or college · Public · Aberdeen88.2 mi$8,845 in-state tuition

About 0 of every 100 Agar residents are enrolled in college, against 5 across South Dakota.

Prices by family income, graduation and earnings →

About Agar

Town in South Dakota, United States

Agar (; AY-gar) is a small town in Sully County, South Dakota, United States. As of the 2020 census, Agar had a population of 68. Agar is a farm/ranch service center.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Area
0.2 sq mi
Elevation
1,850 ft
ZIP code
57520
Area code
605

Questions about Agar

Short answers, built from the data on this page.

Is Agar, SD a good place to live?

Agar has fewer than 1,000 residents, too few for fair grades; the figures below are still real.