Dewey, South Dakota
Dewey: Situated at an elevation of 3714 feet in the southwestern corner of Custer County, this unincorporated community lies along the Wyoming border in a transition zone between the Black Hills and the high plains.
About
Dewey is a city located in the county of Custer in the U.S. state of South Dakota.
Quick Facts about Dewey
| State | South Dakota (United States) |
| County | Custer County |
| Latitude & Longitude | 43.5308,-104.0410 |
| Time Zone | America/Denver |
| Local time | 21:17:56 (6th November 2026) |
| Weather | 32℉ Partly Cloudy 7-days weather |
Geography
Dewey is located at 43°31'51"N 104°2'28"W (43.5308100, -104.0410400).
Dewey map
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Weather
32°F
Partly Cloudy
0 to 5 mph ENE
Tonight
Partly cloudy, with a low around 32. East northeast wind 0 to 5 mph.
7-Day Forecast
S and G Ranch
Closest post offices linked to Dewey.
| Post Office Name | City | ZIP |
|---|---|---|
| Edgemon Post Office | Edgemont (SD) | 57735 |
| Pringl Post Office | Pringle (SD) | 57773 |
| Newcastl Post Office | Newcastle (WY) | 82701 |
| Custer Post Office | Custer (SD) | 57730 |
| Hot Spring Post Office | Hot Springs (SD) | 57747 |
Other cities in Custer County
Cities, towns, neighborhoods & other populated places in Custer County , SD.
| City Name | Population | Title |
|---|---|---|
| Custer | 1,926 | City in and county seat of Custer County, South Dakota, United States |