Green Grass is a community in Dewey County, South Dakota, home to about 78 people across 8.1 square miles. It has no ZIP code of its own: it’s part of 57625.
Mostly Eagle Butte; part is in Green Grass
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| Nearest major airport | Eppley Airfield (OMA)371 miles away |
|---|---|
| Closer regional airport | Pierre Regional Airport (PIR)63 miles away |
| Nearest city of 250,000+ | Omaha, NE367 miles away |
| Nearest city of 1 million+ | Chicago, IL714 miles away |
Straight-line distances from the center of Green Grass; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Green Grass had 21 residents in the 2020 census, down 64% since 2000.
It’s the 327th largest of 440 towns in South Dakota by population.
Dewey County grew from 1,145 residents in 1910 to 5,239 in 2020.
Dewey County, 1910–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 9°F. About 19.5 inches of rain and melted snow fall in a typical year, with about 47 inches of snow.
Source: NOAA 1991–2020 climate normals, Dupree 15 Sse, SD weather station (15 miles away).
778 jobs at 103 businesses in Dewey County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
28 doctors and other health care providers list an office in Green Grass.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Dentists | 2 |
| Nurse practitioners and physician assistants | 17 |
| Mental health providers | 4 |
| Physical and occupational therapists | 2 |
| Optometrists | 1 |
| Pharmacies | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Cheyenne-Eagle Butte School, Eagle Butte School District 20-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Cheyenne-Eagle Butte SchoolEagle Butte | K–12 | 829 | Public | 0.2 mi |
| Eagle Butte Primary - 02Eagle Butte | K–2 | 85 | Public | 0.2 mi |
| Eagle Butte Upper Elementary - 03Eagle Butte | 3–6 | 281 | Public | 0.6 mi |
| E.A.G.L.E. Center - 09Eagle Butte | 5–8 | — | Alternative Education | 0.2 mi |
| Eagle Butte Jr. High - 06Eagle Butte | 7–8 | 5 | Public | 0.2 mi |
| E. A. G. L. E. Center High School - 07Eagle Butte | 9–12 | 3 | Alternative Education | 0.2 mi |
| Eagle Butte High School - 01Eagle Butte | 9–12 | 6 | Public | 0.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Windswept AcademyEagle Butte | K–11 | 61 | Christian (no specific denomination) | 0.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with North Eagle Butte and Eagle Butte.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.