Whitehorse, South Dakota
Whitehorse: Situated within Dewey County at an elevation of 1716 feet, this census-designated place lies on the Cheyenne River Sioux Reservation in north-central South Dakota.
About
Whitehorse is a city located in the county of Dewey in the U.S. state of South Dakota.
Quick Facts about Whitehorse
| State | South Dakota (United States) |
| County | Dewey County |
| Latitude & Longitude | 45.2705,-100.8865 |
| Time Zone | America/Denver |
| Local time | 12:38:28 (8th November 2026) |
| Postal code | 57661 |
| Weather | 65℉ Mostly Sunny 7-days weather |
Geography
Whitehorse is located at 45°16'14"N 100°53'12"W (45.2705400, -100.8865300).
Whitehorse map
Click "full screen" 
icon to open full mode. View satellite images
icon to open full mode. View satellite images
Weather
65°F
Mostly Sunny
12 to 17 mph SSE
Today
Mostly sunny. High near 65, with temperatures falling to around 56 in the afternoon. South southeast wind 12 to 17 mph, with gusts as high as 25 mph.
7-Day Forecast
Whitehorse zip code is 57661.
County name: Dewey, County
fips: 46041
Closest post offices linked to Whitehorse.
| Post Office Name | City | ZIP |
|---|---|---|
| Whitehor Post Office | Whitehorse (SD) | 57661 |
Other cities in Dewey County
Cities, towns, neighborhoods & other populated places in Dewey County , SD.
| City Name | Population | Title |
|---|---|---|
| North Eagle Butte | 1,954 | Census designated place in Dewey County, South Dakota, United States |