Green Grass, South Dakota
Green Grass: township in Dewey County, South Dakota.
About
Green Grass is a city located in the county of Dewey in the U.S. state of South Dakota.
Quick Facts about Green Grass
| Country | United States of America |
| State | South Dakota (United States) |
| County | Dewey County |
| Phone Area Codes | 605 |
| Area | 21.06 km2 |
| Latitude & Longitude | 45.1711,-101.2460 |
| Altitude | 1,860 feet / 567 meters |
| Time Zone | America/Denver |
| Local time | 00:19:47 (16th September 2026) |
| Weather | 51℉ Partly Cloudy 7-days weather |
Geography
Green Grass is located at 45°10'16"N 101°14'46"W (45.1710900, -101.2459900).
Green Grass map
Click "full screen" 
icon to open full mode. View satellite images
icon to open full mode. View satellite images
Weather
51°F
Partly Cloudy
5 to 17 mph ESE
Tuesday Night
Partly cloudy, with a low around 51. East southeast wind 5 to 17 mph, with gusts as high as 28 mph.
7-Day ForecastClosest post offices linked to Green Grass.
| Post Office Name | City | ZIP |
|---|---|---|
| Eagle Bu Post Office | Eagle Butte (SD) | 57625 |
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 |