Dewey County, South Dakota
Dewey County: County in South Dakota, United States of America
About
Dewey County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 5,301 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 5,789 inhabitants. Its county seat is Timber Lake. The county was created 142 years ago in 1882.
Quick Facts about Dewey County
| Population : | 5,789 (2020) |
| Country : | United States of America |
| State : | South Dakota (United States) |
| Different from : | Dewey, Dewey County |
| Area : | 6334 km2 |
| Water as percent of area : | 5.8% |
| Land as percent of area : | 94.2% |
| Capital : | Timber Lake |
| Establishment : | January 01, 1883 |
| Time Zone : | America/Denver |
| Local time : | 10:56:01 (22nd February 2025) |
| Density : | 1 Pop. per km² as of 2020 |
| Population growth : | 8.43% (2010-2020) |
Geography
Dewey County is located at 45°9'24"N 100°52'19"W (45.1566200, -100.8718600). It has 6 neighbors: Potter County, Walworth County, Corson County, Stanley County, Sully County and Ziebach County.
Dewey County map
icon to open full mode. View satellite images
The largest city of Dewey County is Eagle Butte with a population of 1,418. Other cities include, Timber Lake population 491 and Firesteel population 35. See all Dewey County cities & populated places.
Dewey County Populated Places
Cities, towns, neighborhoods & other populated places in Dewey County.
| 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 |
Dewey County has 6 neighbours.
- Potter County county in South Dakota, United States
- Walworth County county in South Dakota, United States
- Corson County county in South Dakota, United States
- Stanley County county in South Dakota, United States
- Sully County county in South Dakota, United States
- Ziebach County county in South Dakota, United States of America
- Timber Lake
Demographics
The population of Dewey County increased by 8.43% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 5,301 | - | census |
| 2011 | 5,399 | 1.82% | estimation process |
| 2012 | 5,534 | 2.44% | estimation process |
| 2013 | 5,586 | 0.93% | estimation process |
| 2014 | 5,668 | 1.45% | estimation process |
| 2015 | 5,705 | 0.65% | estimation process |
| 2016 | 5,785 | 1.38% | estimation process |
| 2017 | 5,857 | 1.23% | estimation process |
| 2018 | 5,925 | 1.15% | estimation process |
| 2019 | 5,892 | -0.56% | estimation process |
| 2020 | 5,789 | -1.78% | estimation process |
Other places with the same name (2)
- Dewey County , Oklahoma county in South Dakota, United States of America with a population of 4,815 people.
South Dakota Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Minnehaha County | 196,659 | County in South Dakota, United States of America |
| Sioux Falls | 157,584 | The largest city in South Dakota. |
| Pennington County | 115,926 | County in South Dakota, United States of America |
| Rapid City | 77,503 | The second most populous city in South Dakota. |
| Lincoln County | 63,019 | County in South Dakota, United States |
| Brown County | 38,738 | County in South Dakota, United States |
| Brookings County | 35,603 | County in South Dakota, United States of America |
| Meade County | 28,588 | County in South Dakota, United States |
| Codington County | 28,186 | County in South Dakota, United States of America |
| Lawrence County | 26,221 | County in South Dakota, United States |
| Yankton County | 22,742 | County in South Dakota, United States |
| Watertown | 22,303 | City in and county seat of Codington County, South Dakota, United States |
| Davison County | 19,812 | County in South Dakota, United States of America |
| Beadle County | 18,513 | County in South Dakota, United States |
| Hughes County | 17,336 | County in Oklahoma, United States |
| Union County | 16,192 | County in South Dakota, United States |
