Agar is a town in Sully County, South Dakota, home to about 81 people across 0.2 square miles. Its ZIP code is 57520.
Mostly Agar
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| Nearest major airport | Eppley Airfield (OMA)323 miles away |
|---|---|
| Closer regional airport | Pierre Regional Airport (PIR)33 miles away |
| Nearest city of 250,000+ | Omaha, NE319 miles away |
| Nearest city of 1 million+ | Chicago, IL656 miles away |
Straight-line distances from the center of Agar; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Agar had 68 residents in the 2020 census, down 17% since 2000.
It’s the 323rd largest of 440 towns in South Dakota by population.
Sully County grew from 1,715 residents in 1900 to 1,446 in 2020.
Sully County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 7°F. About 21.1 inches of rain and melted snow fall in a typical year, with about 49 inches of snow.
Source: NOAA 1991–2020 climate normals, Onida 4 Nw, SD weather station (8 miles away).
304 jobs at 67 businesses in Sully County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.