Gann Valley
Census-designated place in Buffalo County, South Dakota

Gann Valley is an unincorporated community (census-designated place) in Buffalo County, South Dakota, with 10 residents (2020 Census). It sits at 1,604 ft (489 m) above sea level. The nearest town is Spring Valley Colony, 5.3 miles E.
- 10residents (2020 Census)
- 1,604 ftelevation · 489 m
- 0.1 sq miland area · 0.2 km²
- 126 / sq mipopulation density
- 57341ZIP code
About Gann Valley
Gann Valley is a census-designated place in and the county seat of Buffalo County, South Dakota, United States. The town had a population of 10 as of the 2020 census. It is the smallest unincorporated county seat in the United States.
Text: Wikipedia · CC BY-SA 4.0
Gann Valley weather: 7-day forecast
Loading the National Weather Service forecast…
Source: National Weather Service (NOAA).
Live webcams in Gann Valley
Webcams: Windy.com
Do you know Gann Valley? Tell us about it
Help other travelers: share what makes Gann Valley special. We review every message before publishing it.
Map of Gann Valley
Tap any street on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Gann Valley Street View
Drag the image to look around and tap the arrows on the ground to move. If it says there is no imagery, tap a nearby street on the map above.
Open in Google Maps ›Gann Valley, SD population
Gann Valley had 10 residents in the 2020 Census.
| 2020 Census | 10 |
|---|---|
| Density | 126 per sq mi (49 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Gann Valley at a glance
| State | South Dakota (SD) |
|---|---|
| County | Buffalo County |
| Type | Census-designated place |
| Population | 10 (2020) |
| Land area | 0.08 sq mi (0.2 km²) |
| Elevation | 1,604 ft (489 m) |
| Coordinates | 44.0335° N, 98.9884° W |
| ZIP code | 57341 |
| Official website | gannvalley.com |
| Census code (GEOID) | 4623421 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Gann Valley
- Spring Valley Colony5.3 mi E
- Kimball19.9 mi S
- Pukwana20.1 mi SW
- Fort Thompson20.3 mi W
- Wessington Springs21.0 mi E
- Chamberlain23.5 mi SW
- Oacoma24.6 mi SW
- White Lake25.2 mi SE
- Millerdale Colony25.9 mi N
- Grass Ranch Colony27.0 mi S
- Stephan27.6 mi NW
- Lane28.1 mi E
Straight-line distance between town centers.
Frequently asked questions about Gann Valley
What county is Gann Valley in?
Gann Valley is in Buffalo County, South Dakota.
What is the population of Gann Valley, SD?
10 people lived in Gann Valley at the 2020 Census.
What is the ZIP code of Gann Valley, SD?
The ZIP code of Gann Valley is 57341.
What is the elevation of Gann Valley?
1,604 feet (489 m) above sea level.
What towns are near Gann Valley?
Spring Valley Colony (5.3 mi), Kimball (19.9 mi), Pukwana (20.1 mi), Fort Thompson (20.3 mi), Wessington Springs (21.0 mi).
Last updated: