Dewey County, Administrative division in South Dakota, United States
Dewey County consists of 2,445 square miles of terrain with rolling hills sloping toward the southeast into the Missouri River basin.
The county received its name from William P. Dewey, who served as Territorial surveyor-general between 1873 and 1877, and was established in 1883.
The county lies within the Cheyenne River Indian Reservation, with a small section extending into the Standing Rock Indian Reservation.
Timber Lake functions as the county seat, providing administrative services and government offices at 710 C Street for the county's 5,239 residents.
The Moreau River flows east-northeasterly through the county before joining the Missouri River, which forms the southeastern boundary.
Location: South Dakota
Inception: 1883
Capital city: Timber Lake
Shares border with: Corson County, Walworth County, Potter County, Sully County, Stanley County, Ziebach County, Haakon County
GPS coordinates: 45.16000,-100.88000
Latest update: March 6, 2025 15:24
Thunder Butte
80.5 km
Lake Oahe
87.5 km
Pierre Shale
92.8 km
Sitting Bull Monument
50.3 km
Fort Pierre Chouteau
94.1 km
Molstad Village
52.8 km
Chicago and North Western Railroad Bridge
96.4 km
Mobridge Masonic Temple
54.7 km
I. W. Goodner House
96.5 km
Farr House
97.3 km
G.L. Stocker Blacksmith Shop
74.4 km
D.H. and Leah Curran House
75 km
Dakota Club Library
33.2 km
Ziebach County Courthouse
58.1 km
Holy Spirit Chapel
61.2 km
Pierre Masonic Lodge
70.8 km
A. H. Brown Public Library
54.7 km
Walworth County Courthouse
76.6 km
Brink-Wegner House
96.5 km
Laurens Polygonal Hog House
26.1 km
Sully County Courthouse
81.7 km
George Holland House
74.4 km
Potter County Courthouse
74.6 km
L.E. Snyder House
81.8 km
Selby Opera House
77.7 km
Methodist Episcopal Church
97.2 km
Little Moreau State Recreation Area
27.7 km
Okobojo Point Recreation Area
71.7 kmReviews
Visited this place? Tap the stars to rate it and share your experience / photos with the community! Try now! You can cancel it anytime.
Discover hidden gems everywhere you go!
From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.
A unique approach to discovering new places❞
— Le Figaro
All the places worth exploring❞
— France Info
A tailor-made excursion in just a few clicks❞
— 20 Minutes