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 | 14:31:24 (9th June 2026) |
| Postal code | 57661 |
| Weather | 59℉ Partly Cloudy 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
59°F
Partly Cloudy
10 mph ESE
Overnight
Partly cloudy. Low around 59, with temperatures rising to around 62 overnight. East southeast wind around 10 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 |
| Eagle Butte | 1,418 | City in Dewey and Ziebach counties in South Dakota, United States |
| Timber Lake | 491 | City in and county seat of Dewey County, South Dakota, United States |
| Virginia | 292 | Township in Union County, South Dakota |
| Isabel | 150 | Town in Dewey County, South Dakota, United States |
| Firesteel | 35 | Unincorporated community in South Dakota |
| Moreau | 27 | Township in Perkins County, South Dakota |